128678896

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{217363}}^1$

素因数の和:217408

約数の個数: 20

約数和(自身を含む): 256054792

約数和(自身を除く): 127375896

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 217363, 434726, 869452, 1738904, 3477808, 8042431, 16084862, 32169724, 64339448, 128678896]

約数ペア:

[(1, 128678896), (2, 64339448), (4, 32169724), (8, 16084862), (16, 8042431), (37, 3477808), (74, 1738904), (148, 869452), (296, 434726), (592, 217363)]