221287920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{607}}^1$

素因数の和:668

約数の個数: 240

約数和(自身を含む): 825090048

約数和(自身を除く): 603802128

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 35, 40, 42, 48, 49, 56, 60, 62, 70, 80, 84, 93, 98, 105, 112, 120, 124, 140, 147, 155, 168, 186, 196, 210, 217, 240, 245, 248, 280, 294, 310, 336, 372, 392, 420, 434, 465, 490, 496, 560, 588, 607, 620, 651, 735, 744, 784, 840, 868, 930, 980, 1085, 1176, 1214, 1240, 1302, 1470, 1488, 1519, 1680, 1736, 1821, 1860, 1960, 2170, 2352, 2428, 2480, 2604, 2940, 3035, 3038, 3255, 3472, 3642, 3720, 3920, 4249, 4340, 4557, 4856, 5208, 5880, 6070, 6076, 6510, 7284, 7440, 7595, 8498, 8680, 9105, 9114, 9712, 10416, 11760, 12140, 12152, 12747, 13020, 14568, 15190, 16996, 17360, 18210, 18228, 18817, 21245, 22785, 24280, 24304, 25494, 26040, 29136, 29743, 30380, 33992, 36420, 36456, 37634, 42490, 45570, 48560, 50988, 52080, 56451, 59486, 60760, 63735, 67984, 72840, 72912, 75268, 84980, 89229, 91140, 94085, 101976, 112902, 118972, 121520, 127470, 131719, 145680, 148715, 150536, 169960, 178458, 182280, 188170, 203952, 225804, 237944, 254940, 263438, 282255, 297430, 301072, 339920, 356916, 364560, 376340, 395157, 446145, 451608, 475888, 509880, 526876, 564510, 594860, 658595, 713832, 752680, 790314, 892290, 903216, 922033, 1019760, 1053752, 1129020, 1189720, 1317190, 1427664, 1505360, 1580628, 1784580, 1844066, 1975785, 2107504, 2258040, 2379440, 2634380, 2766099, 3161256, 3569160, 3688132, 3951570, 4516080, 4610165, 5268760, 5532198, 6322512, 7138320, 7376264, 7903140, 9220330, 10537520, 11064396, 13830495, 14752528, 15806280, 18440660, 22128792, 27660990, 31612560, 36881320, 44257584, 55321980, 73762640, 110643960, 221287920]

約数ペア:

[(1, 221287920), (2, 110643960), (3, 73762640), (4, 55321980), (5, 44257584), (6, 36881320), (7, 31612560), (8, 27660990), (10, 22128792), (12, 18440660), (14, 15806280), (15, 14752528), (16, 13830495), (20, 11064396), (21, 10537520), (24, 9220330), (28, 7903140), (30, 7376264), (31, 7138320), (35, 6322512), (40, 5532198), (42, 5268760), (48, 4610165), (49, 4516080), (56, 3951570), (60, 3688132), (62, 3569160), (70, 3161256), (80, 2766099), (84, 2634380), (93, 2379440), (98, 2258040), (105, 2107504), (112, 1975785), (120, 1844066), (124, 1784580), (140, 1580628), (147, 1505360), (155, 1427664), (168, 1317190), (186, 1189720), (196, 1129020), (210, 1053752), (217, 1019760), (240, 922033), (245, 903216), (248, 892290), (280, 790314), (294, 752680), (310, 713832), (336, 658595), (372, 594860), (392, 564510), (420, 526876), (434, 509880), (465, 475888), (490, 451608), (496, 446145), (560, 395157), (588, 376340), (607, 364560), (620, 356916), (651, 339920), (735, 301072), (744, 297430), (784, 282255), (840, 263438), (868, 254940), (930, 237944), (980, 225804), (1085, 203952), (1176, 188170), (1214, 182280), (1240, 178458), (1302, 169960), (1470, 150536), (1488, 148715), (1519, 145680), (1680, 131719), (1736, 127470), (1821, 121520), (1860, 118972), (1960, 112902), (2170, 101976), (2352, 94085), (2428, 91140), (2480, 89229), (2604, 84980), (2940, 75268), (3035, 72912), (3038, 72840), (3255, 67984), (3472, 63735), (3642, 60760), (3720, 59486), (3920, 56451), (4249, 52080), (4340, 50988), (4557, 48560), (4856, 45570), (5208, 42490), (5880, 37634), (6070, 36456), (6076, 36420), (6510, 33992), (7284, 30380), (7440, 29743), (7595, 29136), (8498, 26040), (8680, 25494), (9105, 24304), (9114, 24280), (9712, 22785), (10416, 21245), (11760, 18817), (12140, 18228), (12152, 18210), (12747, 17360), (13020, 16996), (14568, 15190)]