639435855

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{5101}}^1$

素因数の和:5307

約数の個数: 32

約数和(自身を含む): 1047665088

約数和(自身を除く): 408229233

約数列:

[1, 3, 5, 15, 61, 137, 183, 305, 411, 685, 915, 2055, 5101, 8357, 15303, 25071, 25505, 41785, 76515, 125355, 311161, 698837, 933483, 1555805, 2096511, 3494185, 4667415, 10482555, 42629057, 127887171, 213145285, 639435855]

約数ペア:

[(1, 639435855), (3, 213145285), (5, 127887171), (15, 42629057), (61, 10482555), (137, 4667415), (183, 3494185), (305, 2096511), (411, 1555805), (685, 933483), (915, 698837), (2055, 311161), (5101, 125355), (8357, 76515), (15303, 41785), (25071, 25505)]