21805160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2207}}^1$

素因数の和:2250

約数の個数: 64

約数和(自身を含む): 55641600

約数和(自身を除く): 33836440

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2207, 2470, 4414, 4940, 8828, 9880, 11035, 17656, 22070, 28691, 41933, 44140, 57382, 83866, 88280, 114764, 143455, 167732, 209665, 229528, 286910, 335464, 419330, 545129, 573820, 838660, 1090258, 1147640, 1677320, 2180516, 2725645, 4361032, 5451290, 10902580, 21805160]

約数ペア:

[(1, 21805160), (2, 10902580), (4, 5451290), (5, 4361032), (8, 2725645), (10, 2180516), (13, 1677320), (19, 1147640), (20, 1090258), (26, 838660), (38, 573820), (40, 545129), (52, 419330), (65, 335464), (76, 286910), (95, 229528), (104, 209665), (130, 167732), (152, 143455), (190, 114764), (247, 88280), (260, 83866), (380, 57382), (494, 44140), (520, 41933), (760, 28691), (988, 22070), (1235, 17656), (1976, 11035), (2207, 9880), (2470, 8828), (4414, 4940)]