18221450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{97}}^1$

素因数の和:156

約数の個数: 72

約数和(自身を含む): 39171972

約数和(自身を除く): 20950522

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 97, 130, 170, 194, 221, 289, 325, 425, 442, 485, 578, 650, 850, 970, 1105, 1261, 1445, 1649, 2210, 2425, 2522, 2890, 3298, 3757, 4850, 5525, 6305, 7225, 7514, 8245, 11050, 12610, 14450, 16490, 18785, 21437, 28033, 31525, 37570, 41225, 42874, 56066, 63050, 82450, 93925, 107185, 140165, 187850, 214370, 280330, 364429, 535925, 700825, 728858, 1071850, 1401650, 1822145, 3644290, 9110725, 18221450]

約数ペア:

[(1, 18221450), (2, 9110725), (5, 3644290), (10, 1822145), (13, 1401650), (17, 1071850), (25, 728858), (26, 700825), (34, 535925), (50, 364429), (65, 280330), (85, 214370), (97, 187850), (130, 140165), (170, 107185), (194, 93925), (221, 82450), (289, 63050), (325, 56066), (425, 42874), (442, 41225), (485, 37570), (578, 31525), (650, 28033), (850, 21437), (970, 18785), (1105, 16490), (1261, 14450), (1445, 12610), (1649, 11050), (2210, 8245), (2425, 7514), (2522, 7225), (2890, 6305), (3298, 5525), (3757, 4850)]