640255668

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{4104203}}^1$

素因数の和:4104223

約数の個数: 24

約数和(自身を含む): 1608847968

約数和(自身を除く): 968592300

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 4104203, 8208406, 12312609, 16416812, 24625218, 49250436, 53354639, 106709278, 160063917, 213418556, 320127834, 640255668]

約数ペア:

[(1, 640255668), (2, 320127834), (3, 213418556), (4, 160063917), (6, 106709278), (12, 53354639), (13, 49250436), (26, 24625218), (39, 16416812), (52, 12312609), (78, 8208406), (156, 4104203)]