12642500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:426

約数の個数: 60

約数和(自身を含む): 29849820

約数和(自身を除く): 17207320

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 389, 500, 625, 650, 778, 1250, 1300, 1556, 1625, 1945, 2500, 3250, 3890, 5057, 6500, 7780, 8125, 9725, 10114, 16250, 19450, 20228, 25285, 32500, 38900, 48625, 50570, 97250, 101140, 126425, 194500, 243125, 252850, 486250, 505700, 632125, 972500, 1264250, 2528500, 3160625, 6321250, 12642500]

約数ペア:

[(1, 12642500), (2, 6321250), (4, 3160625), (5, 2528500), (10, 1264250), (13, 972500), (20, 632125), (25, 505700), (26, 486250), (50, 252850), (52, 243125), (65, 194500), (100, 126425), (125, 101140), (130, 97250), (250, 50570), (260, 48625), (325, 38900), (389, 32500), (500, 25285), (625, 20228), (650, 19450), (778, 16250), (1250, 10114), (1300, 9725), (1556, 8125), (1625, 7780), (1945, 6500), (2500, 5057), (3250, 3890)]