18782830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 72

約数和(自身を含む): 40133016

約数和(自身を除く): 21350186

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 43, 55, 86, 95, 110, 121, 190, 209, 215, 242, 361, 418, 430, 473, 605, 722, 817, 946, 1045, 1210, 1634, 1805, 2090, 2299, 2365, 3610, 3971, 4085, 4598, 4730, 5203, 7942, 8170, 8987, 10406, 11495, 15523, 17974, 19855, 22990, 26015, 31046, 39710, 43681, 44935, 52030, 77615, 87362, 89870, 98857, 155230, 170753, 197714, 218405, 341506, 436810, 494285, 853765, 988570, 1707530, 1878283, 3756566, 9391415, 18782830]

約数ペア:

[(1, 18782830), (2, 9391415), (5, 3756566), (10, 1878283), (11, 1707530), (19, 988570), (22, 853765), (38, 494285), (43, 436810), (55, 341506), (86, 218405), (95, 197714), (110, 170753), (121, 155230), (190, 98857), (209, 89870), (215, 87362), (242, 77615), (361, 52030), (418, 44935), (430, 43681), (473, 39710), (605, 31046), (722, 26015), (817, 22990), (946, 19855), (1045, 17974), (1210, 15523), (1634, 11495), (1805, 10406), (2090, 8987), (2299, 8170), (2365, 7942), (3610, 5203), (3971, 4730), (4085, 4598)]