21319480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5857}}^1$

素因数の和:5888

約数の個数: 64

約数和(自身を含む): 59048640

約数和(自身を除く): 37729160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5857, 11714, 23428, 29285, 40999, 46856, 58570, 76141, 81998, 117140, 152282, 163996, 204995, 234280, 304564, 327992, 380705, 409990, 532987, 609128, 761410, 819980, 1065974, 1522820, 1639960, 2131948, 2664935, 3045640, 4263896, 5329870, 10659740, 21319480]

約数ペア:

[(1, 21319480), (2, 10659740), (4, 5329870), (5, 4263896), (7, 3045640), (8, 2664935), (10, 2131948), (13, 1639960), (14, 1522820), (20, 1065974), (26, 819980), (28, 761410), (35, 609128), (40, 532987), (52, 409990), (56, 380705), (65, 327992), (70, 304564), (91, 234280), (104, 204995), (130, 163996), (140, 152282), (182, 117140), (260, 81998), (280, 76141), (364, 58570), (455, 46856), (520, 40999), (728, 29285), (910, 23428), (1820, 11714), (3640, 5857)]