128587654

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1\times {\mathrm{383}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 214502400

約数和(自身を除く): 85914746

約数列:

[1, 2, 13, 26, 37, 74, 349, 383, 481, 698, 766, 962, 4537, 4979, 9074, 9958, 12913, 14171, 25826, 28342, 133667, 167869, 184223, 267334, 335738, 368446, 1737671, 3475342, 4945679, 9891358, 64293827, 128587654]

約数ペア:

[(1, 128587654), (2, 64293827), (13, 9891358), (26, 4945679), (37, 3475342), (74, 1737671), (349, 368446), (383, 335738), (481, 267334), (698, 184223), (766, 167869), (962, 133667), (4537, 28342), (4979, 25826), (9074, 14171), (9958, 12913)]