64793320

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1973}}^1$

素因数の和:2805

約数の個数: 32

約数和(自身を含む): 146036520

約数和(自身を除く): 81243200

約数列:

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

約数ペア:

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