20327620

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{151}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 23798588

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 127, 151, 212, 254, 265, 302, 508, 530, 604, 635, 755, 1060, 1270, 1510, 2540, 3020, 6731, 8003, 13462, 16006, 19177, 26924, 32012, 33655, 38354, 40015, 67310, 76708, 80030, 95885, 134620, 160060, 191770, 383540, 1016381, 2032762, 4065524, 5081905, 10163810, 20327620]

約数ペア:

[(1, 20327620), (2, 10163810), (4, 5081905), (5, 4065524), (10, 2032762), (20, 1016381), (53, 383540), (106, 191770), (127, 160060), (151, 134620), (212, 95885), (254, 80030), (265, 76708), (302, 67310), (508, 40015), (530, 38354), (604, 33655), (635, 32012), (755, 26924), (1060, 19177), (1270, 16006), (1510, 13462), (2540, 8003), (3020, 6731)]