21905748

素因数分解:

$2^2\times 3^3\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:198

約数の個数: 96

約数和(自身を含む): 59875200

約数和(自身を除く): 37969452

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 43, 53, 54, 86, 89, 106, 108, 129, 159, 172, 178, 212, 258, 267, 318, 356, 387, 477, 516, 534, 636, 774, 801, 954, 1068, 1161, 1431, 1548, 1602, 1908, 2279, 2322, 2403, 2862, 3204, 3827, 4558, 4644, 4717, 4806, 5724, 6837, 7654, 9116, 9434, 9612, 11481, 13674, 14151, 15308, 18868, 20511, 22962, 27348, 28302, 34443, 41022, 42453, 45924, 56604, 61533, 68886, 82044, 84906, 103329, 123066, 127359, 137772, 169812, 202831, 206658, 246132, 254718, 405662, 413316, 509436, 608493, 811324, 1216986, 1825479, 2433972, 3650958, 5476437, 7301916, 10952874, 21905748]

約数ペア:

[(1, 21905748), (2, 10952874), (3, 7301916), (4, 5476437), (6, 3650958), (9, 2433972), (12, 1825479), (18, 1216986), (27, 811324), (36, 608493), (43, 509436), (53, 413316), (54, 405662), (86, 254718), (89, 246132), (106, 206658), (108, 202831), (129, 169812), (159, 137772), (172, 127359), (178, 123066), (212, 103329), (258, 84906), (267, 82044), (318, 68886), (356, 61533), (387, 56604), (477, 45924), (516, 42453), (534, 41022), (636, 34443), (774, 28302), (801, 27348), (954, 22962), (1068, 20511), (1161, 18868), (1431, 15308), (1548, 14151), (1602, 13674), (1908, 11481), (2279, 9612), (2322, 9434), (2403, 9116), (2862, 7654), (3204, 6837), (3827, 5724), (4558, 4806), (4644, 4717)]