638721570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{495133}}^1$

素因数の和:495186

約数の個数: 32

約数和(自身を含む): 1568584512

約数和(自身を除く): 929862942

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 495133, 990266, 1485399, 2475665, 2970798, 4951330, 7426995, 14853990, 21290719, 42581438, 63872157, 106453595, 127744314, 212907190, 319360785, 638721570]

約数ペア:

[(1, 638721570), (2, 319360785), (3, 212907190), (5, 127744314), (6, 106453595), (10, 63872157), (15, 42581438), (30, 21290719), (43, 14853990), (86, 7426995), (129, 4951330), (215, 2970798), (258, 2475665), (430, 1485399), (645, 990266), (1290, 495133)]