64886380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249563}}^1$

素因数の和:249585

約数の個数: 24

約数和(自身を含む): 146743632

約数和(自身を除く): 81857252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 249563, 499126, 998252, 1247815, 2495630, 3244319, 4991260, 6488638, 12977276, 16221595, 32443190, 64886380]

約数ペア:

[(1, 64886380), (2, 32443190), (4, 16221595), (5, 12977276), (10, 6488638), (13, 4991260), (20, 3244319), (26, 2495630), (52, 1247815), (65, 998252), (130, 499126), (260, 249563)]