1395638960

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{405709}}^1$

素因数の和:405765

約数の個数: 40

約数和(自身を含む): 3320330640

約数和(自身を除く): 1924691680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 405709, 811418, 1622836, 2028545, 3245672, 4057090, 6491344, 8114180, 16228360, 17445487, 32456720, 34890974, 69781948, 87227435, 139563896, 174454870, 279127792, 348909740, 697819480, 1395638960]

約数ペア:

[(1, 1395638960), (2, 697819480), (4, 348909740), (5, 279127792), (8, 174454870), (10, 139563896), (16, 87227435), (20, 69781948), (40, 34890974), (43, 32456720), (80, 17445487), (86, 16228360), (172, 8114180), (215, 6491344), (344, 4057090), (430, 3245672), (688, 2028545), (860, 1622836), (1720, 811418), (3440, 405709)]