68701240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 159939360

約数和(自身を除く): 91238120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 163, 164, 205, 257, 326, 328, 410, 514, 652, 815, 820, 1028, 1285, 1304, 1630, 1640, 2056, 2570, 3260, 5140, 6520, 6683, 10280, 10537, 13366, 21074, 26732, 33415, 41891, 42148, 52685, 53464, 66830, 83782, 84296, 105370, 133660, 167564, 209455, 210740, 267320, 335128, 418910, 421480, 837820, 1675640, 1717531, 3435062, 6870124, 8587655, 13740248, 17175310, 34350620, 68701240]

約数ペア:

[(1, 68701240), (2, 34350620), (4, 17175310), (5, 13740248), (8, 8587655), (10, 6870124), (20, 3435062), (40, 1717531), (41, 1675640), (82, 837820), (163, 421480), (164, 418910), (205, 335128), (257, 267320), (326, 210740), (328, 209455), (410, 167564), (514, 133660), (652, 105370), (815, 84296), (820, 83782), (1028, 66830), (1285, 53464), (1304, 52685), (1630, 42148), (1640, 41891), (2056, 33415), (2570, 26732), (3260, 21074), (5140, 13366), (6520, 10537), (6683, 10280)]