31378940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2251}}^1$

素因数の和:2318

約数の個数: 48

約数和(自身を含む): 71505504

約数和(自身を除く): 40126564

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 2251, 2788, 3485, 4502, 6970, 9004, 11255, 13940, 22510, 38267, 45020, 76534, 92291, 153068, 184582, 191335, 369164, 382670, 461455, 765340, 922910, 1568947, 1845820, 3137894, 6275788, 7844735, 15689470, 31378940]

約数ペア:

[(1, 31378940), (2, 15689470), (4, 7844735), (5, 6275788), (10, 3137894), (17, 1845820), (20, 1568947), (34, 922910), (41, 765340), (68, 461455), (82, 382670), (85, 369164), (164, 191335), (170, 184582), (205, 153068), (340, 92291), (410, 76534), (697, 45020), (820, 38267), (1394, 22510), (2251, 13940), (2788, 11255), (3485, 9004), (4502, 6970)]