64979120

素因数分解:

$2^4\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1559}}^1$

素因数の和:2093

約数の個数: 40

約数和(自身を含む): 151463520

約数和(自身を除く): 86484400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 521, 1042, 1559, 2084, 2605, 3118, 4168, 5210, 6236, 7795, 8336, 10420, 12472, 15590, 20840, 24944, 31180, 41680, 62360, 124720, 812239, 1624478, 3248956, 4061195, 6497912, 8122390, 12995824, 16244780, 32489560, 64979120]

約数ペア:

[(1, 64979120), (2, 32489560), (4, 16244780), (5, 12995824), (8, 8122390), (10, 6497912), (16, 4061195), (20, 3248956), (40, 1624478), (80, 812239), (521, 124720), (1042, 62360), (1559, 41680), (2084, 31180), (2605, 24944), (3118, 20840), (4168, 15590), (5210, 12472), (6236, 10420), (7795, 8336)]