131575780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:186

約数の個数: 144

約数和(自身を含む): 341978112

約数和(自身を除く): 210402332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 61, 62, 70, 71, 98, 122, 124, 140, 142, 155, 196, 217, 244, 245, 284, 305, 310, 355, 427, 434, 490, 497, 610, 620, 710, 854, 868, 980, 994, 1085, 1220, 1420, 1519, 1708, 1891, 1988, 2135, 2170, 2201, 2485, 2989, 3038, 3479, 3782, 4270, 4331, 4340, 4402, 4970, 5978, 6076, 6958, 7564, 7595, 8540, 8662, 8804, 9455, 9940, 11005, 11956, 13237, 13916, 14945, 15190, 15407, 17324, 17395, 18910, 21655, 22010, 26474, 29890, 30317, 30380, 30814, 34790, 37820, 43310, 44020, 52948, 59780, 60634, 61628, 66185, 69580, 77035, 86620, 92659, 107849, 121268, 132370, 134261, 151585, 154070, 185318, 212219, 215698, 264740, 268522, 303170, 308140, 370636, 424438, 431396, 463295, 537044, 539245, 606340, 671305, 848876, 926590, 939827, 1061095, 1078490, 1342610, 1853180, 1879654, 2122190, 2156980, 2685220, 3759308, 4244380, 4699135, 6578789, 9398270, 13157578, 18796540, 26315156, 32893945, 65787890, 131575780]

約数ペア:

[(1, 131575780), (2, 65787890), (4, 32893945), (5, 26315156), (7, 18796540), (10, 13157578), (14, 9398270), (20, 6578789), (28, 4699135), (31, 4244380), (35, 3759308), (49, 2685220), (61, 2156980), (62, 2122190), (70, 1879654), (71, 1853180), (98, 1342610), (122, 1078490), (124, 1061095), (140, 939827), (142, 926590), (155, 848876), (196, 671305), (217, 606340), (244, 539245), (245, 537044), (284, 463295), (305, 431396), (310, 424438), (355, 370636), (427, 308140), (434, 303170), (490, 268522), (497, 264740), (610, 215698), (620, 212219), (710, 185318), (854, 154070), (868, 151585), (980, 134261), (994, 132370), (1085, 121268), (1220, 107849), (1420, 92659), (1519, 86620), (1708, 77035), (1891, 69580), (1988, 66185), (2135, 61628), (2170, 60634), (2201, 59780), (2485, 52948), (2989, 44020), (3038, 43310), (3479, 37820), (3782, 34790), (4270, 30814), (4331, 30380), (4340, 30317), (4402, 29890), (4970, 26474), (5978, 22010), (6076, 21655), (6958, 18910), (7564, 17395), (7595, 17324), (8540, 15407), (8662, 15190), (8804, 14945), (9455, 13916), (9940, 13237), (11005, 11956)]