21051816

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 54756480

約数和(自身を除く): 33704664

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 74, 111, 148, 151, 157, 222, 296, 302, 314, 444, 453, 471, 604, 628, 888, 906, 942, 1208, 1256, 1812, 1884, 3624, 3768, 5587, 5809, 11174, 11618, 16761, 17427, 22348, 23236, 23707, 33522, 34854, 44696, 46472, 47414, 67044, 69708, 71121, 94828, 134088, 139416, 142242, 189656, 284484, 568968, 877159, 1754318, 2631477, 3508636, 5262954, 7017272, 10525908, 21051816]

約数ペア:

[(1, 21051816), (2, 10525908), (3, 7017272), (4, 5262954), (6, 3508636), (8, 2631477), (12, 1754318), (24, 877159), (37, 568968), (74, 284484), (111, 189656), (148, 142242), (151, 139416), (157, 134088), (222, 94828), (296, 71121), (302, 69708), (314, 67044), (444, 47414), (453, 46472), (471, 44696), (604, 34854), (628, 33522), (888, 23707), (906, 23236), (942, 22348), (1208, 17427), (1256, 16761), (1812, 11618), (1884, 11174), (3624, 5809), (3768, 5587)]