129157760

素因数分解:

$2^7\times 5^1\times {\mathrm{201809}}^1$

素因数の和:201828

約数の個数: 32

約数和(自身を含む): 308769300

約数和(自身を除く): 179611540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 201809, 403618, 807236, 1009045, 1614472, 2018090, 3228944, 4036180, 6457888, 8072360, 12915776, 16144720, 25831552, 32289440, 64578880, 129157760]

約数ペア:

[(1, 129157760), (2, 64578880), (4, 32289440), (5, 25831552), (8, 16144720), (10, 12915776), (16, 8072360), (20, 6457888), (32, 4036180), (40, 3228944), (64, 2018090), (80, 1614472), (128, 1009045), (160, 807236), (320, 403618), (640, 201809)]