261020500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^2\times {\mathrm{3089}}^1$

素因数の和:3134

約数の個数: 72

約数和(自身を含む): 617493240

約数和(自身を除く): 356472740

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 169, 250, 260, 325, 338, 500, 650, 676, 845, 1300, 1625, 1690, 3089, 3250, 3380, 4225, 6178, 6500, 8450, 12356, 15445, 16900, 21125, 30890, 40157, 42250, 61780, 77225, 80314, 84500, 154450, 160628, 200785, 308900, 386125, 401570, 522041, 772250, 803140, 1003925, 1044082, 1544500, 2007850, 2088164, 2610205, 4015700, 5019625, 5220410, 10039250, 10440820, 13051025, 20078500, 26102050, 52204100, 65255125, 130510250, 261020500]

約数ペア:

[(1, 261020500), (2, 130510250), (4, 65255125), (5, 52204100), (10, 26102050), (13, 20078500), (20, 13051025), (25, 10440820), (26, 10039250), (50, 5220410), (52, 5019625), (65, 4015700), (100, 2610205), (125, 2088164), (130, 2007850), (169, 1544500), (250, 1044082), (260, 1003925), (325, 803140), (338, 772250), (500, 522041), (650, 401570), (676, 386125), (845, 308900), (1300, 200785), (1625, 160628), (1690, 154450), (3089, 84500), (3250, 80314), (3380, 77225), (4225, 61780), (6178, 42250), (6500, 40157), (8450, 30890), (12356, 21125), (15445, 16900)]