64750120

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{9931}}^1$

素因数の和:10105

約数の個数: 32

約数和(自身を含む): 146596320

約数和(自身を除く): 81846200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 9931, 19862, 39724, 49655, 79448, 99310, 198620, 397240, 1618753, 3237506, 6475012, 8093765, 12950024, 16187530, 32375060, 64750120]

約数ペア:

[(1, 64750120), (2, 32375060), (4, 16187530), (5, 12950024), (8, 8093765), (10, 6475012), (20, 3237506), (40, 1618753), (163, 397240), (326, 198620), (652, 99310), (815, 79448), (1304, 49655), (1630, 39724), (3260, 19862), (6520, 9931)]