212981780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:246

約数の個数: 144

約数和(自身を含む): 540546048

約数和(自身を除く): 327564268

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 31, 34, 44, 55, 62, 68, 85, 110, 121, 124, 155, 167, 170, 187, 220, 242, 310, 334, 340, 341, 374, 484, 527, 605, 620, 668, 682, 748, 835, 935, 1054, 1210, 1364, 1670, 1705, 1837, 1870, 2057, 2108, 2420, 2635, 2839, 3340, 3410, 3674, 3740, 3751, 4114, 5177, 5270, 5678, 5797, 6820, 7348, 7502, 8228, 9185, 10285, 10354, 10540, 11356, 11594, 14195, 15004, 18370, 18755, 20207, 20570, 20708, 23188, 25885, 28390, 28985, 31229, 36740, 37510, 40414, 41140, 51770, 56780, 56947, 57970, 62458, 63767, 75020, 80828, 88009, 101035, 103540, 113894, 115940, 124916, 127534, 156145, 176018, 202070, 227788, 255068, 284735, 312290, 318835, 343519, 352036, 404140, 440045, 569470, 624580, 626417, 637670, 687038, 880090, 968099, 1138940, 1252834, 1275340, 1374076, 1717595, 1760180, 1936198, 2505668, 3132085, 3435190, 3872396, 4840495, 6264170, 6870380, 9680990, 10649089, 12528340, 19361980, 21298178, 42596356, 53245445, 106490890, 212981780]

約数ペア:

[(1, 212981780), (2, 106490890), (4, 53245445), (5, 42596356), (10, 21298178), (11, 19361980), (17, 12528340), (20, 10649089), (22, 9680990), (31, 6870380), (34, 6264170), (44, 4840495), (55, 3872396), (62, 3435190), (68, 3132085), (85, 2505668), (110, 1936198), (121, 1760180), (124, 1717595), (155, 1374076), (167, 1275340), (170, 1252834), (187, 1138940), (220, 968099), (242, 880090), (310, 687038), (334, 637670), (340, 626417), (341, 624580), (374, 569470), (484, 440045), (527, 404140), (605, 352036), (620, 343519), (668, 318835), (682, 312290), (748, 284735), (835, 255068), (935, 227788), (1054, 202070), (1210, 176018), (1364, 156145), (1670, 127534), (1705, 124916), (1837, 115940), (1870, 113894), (2057, 103540), (2108, 101035), (2420, 88009), (2635, 80828), (2839, 75020), (3340, 63767), (3410, 62458), (3674, 57970), (3740, 56947), (3751, 56780), (4114, 51770), (5177, 41140), (5270, 40414), (5678, 37510), (5797, 36740), (6820, 31229), (7348, 28985), (7502, 28390), (8228, 25885), (9185, 23188), (10285, 20708), (10354, 20570), (10540, 20207), (11356, 18755), (11594, 18370), (14195, 15004)]