64905440

素因数分解:

$2^5\times 5^1\times {\mathrm{405659}}^1$

素因数の和:405674

約数の個数: 24

約数和(自身を含む): 153339480

約数和(自身を除く): 88434040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 405659, 811318, 1622636, 2028295, 3245272, 4056590, 6490544, 8113180, 12981088, 16226360, 32452720, 64905440]

約数ペア:

[(1, 64905440), (2, 32452720), (4, 16226360), (5, 12981088), (8, 8113180), (10, 6490544), (16, 4056590), (20, 3245272), (32, 2028295), (40, 1622636), (80, 811318), (160, 405659)]