80328440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64781}}^1$

素因数の和:64823

約数の個数: 32

約数和(自身を含む): 186572160

約数和(自身を除く): 106243720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 64781, 129562, 259124, 323905, 518248, 647810, 1295620, 2008211, 2591240, 4016422, 8032844, 10041055, 16065688, 20082110, 40164220, 80328440]

約数ペア:

[(1, 80328440), (2, 40164220), (4, 20082110), (5, 16065688), (8, 10041055), (10, 8032844), (20, 4016422), (31, 2591240), (40, 2008211), (62, 1295620), (124, 647810), (155, 518248), (248, 323905), (310, 259124), (620, 129562), (1240, 64781)]