64247240

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{4129}}^1$

素因数の和:4529

約数の個数: 32

約数和(自身を含む): 144963000

約数和(自身を除く): 80715760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 4129, 7780, 8258, 15560, 16516, 20645, 33032, 41290, 82580, 165160, 1606181, 3212362, 6424724, 8030905, 12849448, 16061810, 32123620, 64247240]

約数ペア:

[(1, 64247240), (2, 32123620), (4, 16061810), (5, 12849448), (8, 8030905), (10, 6424724), (20, 3212362), (40, 1606181), (389, 165160), (778, 82580), (1556, 41290), (1945, 33032), (3112, 20645), (3890, 16516), (4129, 15560), (7780, 8258)]