31138280

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^2\times {\mathrm{113}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 71542980

約数和(自身を除く): 40404700

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 113, 166, 226, 332, 415, 452, 565, 664, 830, 904, 1130, 1660, 2260, 3320, 4520, 6889, 9379, 13778, 18758, 27556, 34445, 37516, 46895, 55112, 68890, 75032, 93790, 137780, 187580, 275560, 375160, 778457, 1556914, 3113828, 3892285, 6227656, 7784570, 15569140, 31138280]

約数ペア:

[(1, 31138280), (2, 15569140), (4, 7784570), (5, 6227656), (8, 3892285), (10, 3113828), (20, 1556914), (40, 778457), (83, 375160), (113, 275560), (166, 187580), (226, 137780), (332, 93790), (415, 75032), (452, 68890), (565, 55112), (664, 46895), (830, 37516), (904, 34445), (1130, 27556), (1660, 18758), (2260, 13778), (3320, 9379), (4520, 6889)]