261648240

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1171}}^1$

素因数の和:1220

約数の個数: 240

約数和(自身を含む): 994043520

約数和(自身を除く): 732395280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 48, 49, 56, 57, 60, 70, 76, 80, 84, 95, 98, 105, 112, 114, 120, 133, 140, 147, 152, 168, 190, 196, 210, 228, 240, 245, 266, 280, 285, 294, 304, 336, 380, 392, 399, 420, 456, 490, 532, 560, 570, 588, 665, 735, 760, 784, 798, 840, 912, 931, 980, 1064, 1140, 1171, 1176, 1330, 1470, 1520, 1596, 1680, 1862, 1960, 1995, 2128, 2280, 2342, 2352, 2660, 2793, 2940, 3192, 3513, 3724, 3920, 3990, 4560, 4655, 4684, 5320, 5586, 5855, 5880, 6384, 7026, 7448, 7980, 8197, 9310, 9368, 10640, 11172, 11710, 11760, 13965, 14052, 14896, 15960, 16394, 17565, 18620, 18736, 22249, 22344, 23420, 24591, 27930, 28104, 31920, 32788, 35130, 37240, 40985, 44498, 44688, 46840, 49182, 55860, 56208, 57379, 65576, 66747, 70260, 74480, 81970, 88996, 93680, 98364, 111245, 111720, 114758, 122955, 131152, 133494, 140520, 155743, 163940, 172137, 177992, 196728, 222490, 223440, 229516, 245910, 266988, 281040, 286895, 311486, 327880, 333735, 344274, 355984, 393456, 444980, 459032, 467229, 491820, 533976, 573790, 622972, 655760, 667470, 688548, 778715, 860685, 889960, 918064, 934458, 983640, 1067952, 1090201, 1147580, 1245944, 1334940, 1377096, 1557430, 1721370, 1779920, 1868916, 1967280, 2180402, 2295160, 2336145, 2491888, 2669880, 2754192, 3114860, 3270603, 3442740, 3737832, 4360804, 4590320, 4672290, 5339760, 5451005, 6229720, 6541206, 6885480, 7475664, 8721608, 9344580, 10902010, 12459440, 13082412, 13770960, 16353015, 17443216, 18689160, 21804020, 26164824, 32706030, 37378320, 43608040, 52329648, 65412060, 87216080, 130824120, 261648240]

約数ペア:

[(1, 261648240), (2, 130824120), (3, 87216080), (4, 65412060), (5, 52329648), (6, 43608040), (7, 37378320), (8, 32706030), (10, 26164824), (12, 21804020), (14, 18689160), (15, 17443216), (16, 16353015), (19, 13770960), (20, 13082412), (21, 12459440), (24, 10902010), (28, 9344580), (30, 8721608), (35, 7475664), (38, 6885480), (40, 6541206), (42, 6229720), (48, 5451005), (49, 5339760), (56, 4672290), (57, 4590320), (60, 4360804), (70, 3737832), (76, 3442740), (80, 3270603), (84, 3114860), (95, 2754192), (98, 2669880), (105, 2491888), (112, 2336145), (114, 2295160), (120, 2180402), (133, 1967280), (140, 1868916), (147, 1779920), (152, 1721370), (168, 1557430), (190, 1377096), (196, 1334940), (210, 1245944), (228, 1147580), (240, 1090201), (245, 1067952), (266, 983640), (280, 934458), (285, 918064), (294, 889960), (304, 860685), (336, 778715), (380, 688548), (392, 667470), (399, 655760), (420, 622972), (456, 573790), (490, 533976), (532, 491820), (560, 467229), (570, 459032), (588, 444980), (665, 393456), (735, 355984), (760, 344274), (784, 333735), (798, 327880), (840, 311486), (912, 286895), (931, 281040), (980, 266988), (1064, 245910), (1140, 229516), (1171, 223440), (1176, 222490), (1330, 196728), (1470, 177992), (1520, 172137), (1596, 163940), (1680, 155743), (1862, 140520), (1960, 133494), (1995, 131152), (2128, 122955), (2280, 114758), (2342, 111720), (2352, 111245), (2660, 98364), (2793, 93680), (2940, 88996), (3192, 81970), (3513, 74480), (3724, 70260), (3920, 66747), (3990, 65576), (4560, 57379), (4655, 56208), (4684, 55860), (5320, 49182), (5586, 46840), (5855, 44688), (5880, 44498), (6384, 40985), (7026, 37240), (7448, 35130), (7980, 32788), (8197, 31920), (9310, 28104), (9368, 27930), (10640, 24591), (11172, 23420), (11710, 22344), (11760, 22249), (13965, 18736), (14052, 18620), (14896, 17565), (15960, 16394)]