128969080

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{40813}}^1$

素因数の和:40903

約数の個数: 32

約数和(自身を含む): 293860800

約数和(自身を除く): 164891720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 40813, 81626, 163252, 204065, 326504, 408130, 816260, 1632520, 3224227, 6448454, 12896908, 16121135, 25793816, 32242270, 64484540, 128969080]

約数ペア:

[(1, 128969080), (2, 64484540), (4, 32242270), (5, 25793816), (8, 16121135), (10, 12896908), (20, 6448454), (40, 3224227), (79, 1632520), (158, 816260), (316, 408130), (395, 326504), (632, 204065), (790, 163252), (1580, 81626), (3160, 40813)]