18661240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2111}}^1$

素因数の和:2152

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 29238920

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2111, 2210, 4222, 4420, 8444, 8840, 10555, 16888, 21110, 27443, 35887, 42220, 54886, 71774, 84440, 109772, 137215, 143548, 179435, 219544, 274430, 287096, 358870, 466531, 548860, 717740, 933062, 1097720, 1435480, 1866124, 2332655, 3732248, 4665310, 9330620, 18661240]

約数ペア:

[(1, 18661240), (2, 9330620), (4, 4665310), (5, 3732248), (8, 2332655), (10, 1866124), (13, 1435480), (17, 1097720), (20, 933062), (26, 717740), (34, 548860), (40, 466531), (52, 358870), (65, 287096), (68, 274430), (85, 219544), (104, 179435), (130, 143548), (136, 137215), (170, 109772), (221, 84440), (260, 71774), (340, 54886), (442, 42220), (520, 35887), (680, 27443), (884, 21110), (1105, 16888), (1768, 10555), (2111, 8840), (2210, 8444), (4222, 4420)]