18120700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 43309728

約数和(自身を除く): 25189028

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 53, 65, 100, 106, 130, 212, 260, 263, 265, 325, 526, 530, 650, 689, 1052, 1060, 1300, 1315, 1325, 1378, 2630, 2650, 2756, 3419, 3445, 5260, 5300, 6575, 6838, 6890, 13150, 13676, 13780, 13939, 17095, 17225, 26300, 27878, 34190, 34450, 55756, 68380, 68900, 69695, 85475, 139390, 170950, 181207, 278780, 341900, 348475, 362414, 696950, 724828, 906035, 1393900, 1812070, 3624140, 4530175, 9060350, 18120700]

約数ペア:

[(1, 18120700), (2, 9060350), (4, 4530175), (5, 3624140), (10, 1812070), (13, 1393900), (20, 906035), (25, 724828), (26, 696950), (50, 362414), (52, 348475), (53, 341900), (65, 278780), (100, 181207), (106, 170950), (130, 139390), (212, 85475), (260, 69695), (263, 68900), (265, 68380), (325, 55756), (526, 34450), (530, 34190), (650, 27878), (689, 26300), (1052, 17225), (1060, 17095), (1300, 13939), (1315, 13780), (1325, 13676), (1378, 13150), (2630, 6890), (2650, 6838), (2756, 6575), (3419, 5300), (3445, 5260)]