21059640

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:222

約数の個数: 192

約数和(自身を含む): 80084160

約数和(自身を除く): 59024520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 61, 63, 70, 72, 84, 90, 105, 120, 122, 126, 137, 140, 168, 180, 183, 210, 244, 252, 274, 280, 305, 315, 360, 366, 411, 420, 427, 488, 504, 548, 549, 610, 630, 685, 732, 822, 840, 854, 915, 959, 1096, 1098, 1220, 1233, 1260, 1281, 1370, 1464, 1644, 1708, 1830, 1918, 2055, 2135, 2196, 2440, 2466, 2520, 2562, 2740, 2745, 2877, 3288, 3416, 3660, 3836, 3843, 4110, 4270, 4392, 4795, 4932, 5124, 5480, 5490, 5754, 6165, 6405, 7320, 7672, 7686, 8220, 8357, 8540, 8631, 9590, 9864, 10248, 10980, 11508, 12330, 12810, 14385, 15372, 16440, 16714, 17080, 17262, 19180, 19215, 21960, 23016, 24660, 25071, 25620, 28770, 30744, 33428, 34524, 38360, 38430, 41785, 43155, 49320, 50142, 51240, 57540, 58499, 66856, 69048, 75213, 76860, 83570, 86310, 100284, 115080, 116998, 125355, 150426, 153720, 167140, 172620, 175497, 200568, 233996, 250710, 292495, 300852, 334280, 345240, 350994, 376065, 467992, 501420, 526491, 584990, 601704, 701988, 752130, 877485, 1002840, 1052982, 1169980, 1403976, 1504260, 1754970, 2105964, 2339960, 2632455, 3008520, 3509940, 4211928, 5264910, 7019880, 10529820, 21059640]

約数ペア:

[(1, 21059640), (2, 10529820), (3, 7019880), (4, 5264910), (5, 4211928), (6, 3509940), (7, 3008520), (8, 2632455), (9, 2339960), (10, 2105964), (12, 1754970), (14, 1504260), (15, 1403976), (18, 1169980), (20, 1052982), (21, 1002840), (24, 877485), (28, 752130), (30, 701988), (35, 601704), (36, 584990), (40, 526491), (42, 501420), (45, 467992), (56, 376065), (60, 350994), (61, 345240), (63, 334280), (70, 300852), (72, 292495), (84, 250710), (90, 233996), (105, 200568), (120, 175497), (122, 172620), (126, 167140), (137, 153720), (140, 150426), (168, 125355), (180, 116998), (183, 115080), (210, 100284), (244, 86310), (252, 83570), (274, 76860), (280, 75213), (305, 69048), (315, 66856), (360, 58499), (366, 57540), (411, 51240), (420, 50142), (427, 49320), (488, 43155), (504, 41785), (548, 38430), (549, 38360), (610, 34524), (630, 33428), (685, 30744), (732, 28770), (822, 25620), (840, 25071), (854, 24660), (915, 23016), (959, 21960), (1096, 19215), (1098, 19180), (1220, 17262), (1233, 17080), (1260, 16714), (1281, 16440), (1370, 15372), (1464, 14385), (1644, 12810), (1708, 12330), (1830, 11508), (1918, 10980), (2055, 10248), (2135, 9864), (2196, 9590), (2440, 8631), (2466, 8540), (2520, 8357), (2562, 8220), (2740, 7686), (2745, 7672), (2877, 7320), (3288, 6405), (3416, 6165), (3660, 5754), (3836, 5490), (3843, 5480), (4110, 5124), (4270, 4932), (4392, 4795)]