129586640

素因数分解:

$2^4\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1973}}^1$

素因数の和:2807

約数の個数: 40

約数和(自身を含む): 301808808

約数和(自身を除く): 172222168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 821, 1642, 1973, 3284, 3946, 4105, 6568, 7892, 8210, 9865, 13136, 15784, 16420, 19730, 31568, 32840, 39460, 65680, 78920, 157840, 1619833, 3239666, 6479332, 8099165, 12958664, 16198330, 25917328, 32396660, 64793320, 129586640]

約数ペア:

[(1, 129586640), (2, 64793320), (4, 32396660), (5, 25917328), (8, 16198330), (10, 12958664), (16, 8099165), (20, 6479332), (40, 3239666), (80, 1619833), (821, 157840), (1642, 78920), (1973, 65680), (3284, 39460), (3946, 32840), (4105, 31568), (6568, 19730), (7892, 16420), (8210, 15784), (9865, 13136)]