128520520

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{38711}}^1$

素因数の和:38805

約数の個数: 32

約数和(自身を含む): 292662720

約数和(自身を除く): 164142200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 38711, 77422, 154844, 193555, 309688, 387110, 774220, 1548440, 3213013, 6426026, 12852052, 16065065, 25704104, 32130130, 64260260, 128520520]

約数ペア:

[(1, 128520520), (2, 64260260), (4, 32130130), (5, 25704104), (8, 16065065), (10, 12852052), (20, 6426026), (40, 3213013), (83, 1548440), (166, 774220), (332, 387110), (415, 309688), (664, 193555), (830, 154844), (1660, 77422), (3320, 38711)]