68218905

素因数分解:

$3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{233}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 111196800

約数和(自身を除く): 42977895

約数列:

[1, 3, 5, 15, 131, 149, 233, 393, 447, 655, 699, 745, 1165, 1965, 2235, 3495, 19519, 30523, 34717, 58557, 91569, 97595, 104151, 152615, 173585, 292785, 457845, 520755, 4547927, 13643781, 22739635, 68218905]

約数ペア:

[(1, 68218905), (3, 22739635), (5, 13643781), (15, 4547927), (131, 520755), (149, 457845), (233, 292785), (393, 173585), (447, 152615), (655, 104151), (699, 97595), (745, 91569), (1165, 58557), (1965, 34717), (2235, 30523), (3495, 19519)]