78539240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2069}}^1$

素因数の和:2166

約数の個数: 64

約数和(自身を含む): 193006800

約数和(自身を除く): 114467560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 73, 104, 130, 146, 260, 292, 365, 520, 584, 730, 949, 1460, 1898, 2069, 2920, 3796, 4138, 4745, 7592, 8276, 9490, 10345, 16552, 18980, 20690, 26897, 37960, 41380, 53794, 82760, 107588, 134485, 151037, 215176, 268970, 302074, 537940, 604148, 755185, 1075880, 1208296, 1510370, 1963481, 3020740, 3926962, 6041480, 7853924, 9817405, 15707848, 19634810, 39269620, 78539240]

約数ペア:

[(1, 78539240), (2, 39269620), (4, 19634810), (5, 15707848), (8, 9817405), (10, 7853924), (13, 6041480), (20, 3926962), (26, 3020740), (40, 1963481), (52, 1510370), (65, 1208296), (73, 1075880), (104, 755185), (130, 604148), (146, 537940), (260, 302074), (292, 268970), (365, 215176), (520, 151037), (584, 134485), (730, 107588), (949, 82760), (1460, 53794), (1898, 41380), (2069, 37960), (2920, 26897), (3796, 20690), (4138, 18980), (4745, 16552), (7592, 10345), (8276, 9490)]