254426240

素因数分解:

$2^7\times 5^1\times {\mathrm{397541}}^1$

素因数の和:397560

約数の個数: 32

約数和(自身を含む): 608239260

約数和(自身を除く): 353813020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 397541, 795082, 1590164, 1987705, 3180328, 3975410, 6360656, 7950820, 12721312, 15901640, 25442624, 31803280, 50885248, 63606560, 127213120, 254426240]

約数ペア:

[(1, 254426240), (2, 127213120), (4, 63606560), (5, 50885248), (8, 31803280), (10, 25442624), (16, 15901640), (20, 12721312), (32, 7950820), (40, 6360656), (64, 3975410), (80, 3180328), (128, 1987705), (160, 1590164), (320, 795082), (640, 397541)]