1311400

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 3124800

約数和(自身を除く): 1813400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 83, 100, 158, 166, 200, 316, 332, 395, 415, 632, 664, 790, 830, 1580, 1660, 1975, 2075, 3160, 3320, 3950, 4150, 6557, 7900, 8300, 13114, 15800, 16600, 26228, 32785, 52456, 65570, 131140, 163925, 262280, 327850, 655700, 1311400]

約数ペア:

[(1, 1311400), (2, 655700), (4, 327850), (5, 262280), (8, 163925), (10, 131140), (20, 65570), (25, 52456), (40, 32785), (50, 26228), (79, 16600), (83, 15800), (100, 13114), (158, 8300), (166, 7900), (200, 6557), (316, 4150), (332, 3950), (395, 3320), (415, 3160), (632, 2075), (664, 1975), (790, 1660), (830, 1580)]