64973240

素因数分解:

$2^3\times 5^1\times {\mathrm{1624331}}^1$

素因数の和:1624342

約数の個数: 16

約数和(自身を含む): 146189880

約数和(自身を除く): 81216640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1624331, 3248662, 6497324, 8121655, 12994648, 16243310, 32486620, 64973240]

約数ペア:

[(1, 64973240), (2, 32486620), (4, 16243310), (5, 12994648), (8, 8121655), (10, 6497324), (20, 3248662), (40, 1624331)]