21905728

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{233}}^1$

素因数の和:371

約数の個数: 56

約数和(自身を含む): 47429928

約数和(自身を除く): 25524200

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 113, 208, 226, 233, 416, 452, 466, 832, 904, 932, 1469, 1808, 1864, 2938, 3029, 3616, 3728, 5876, 6058, 7232, 7456, 11752, 12116, 14912, 23504, 24232, 26329, 47008, 48464, 52658, 94016, 96928, 105316, 193856, 210632, 342277, 421264, 684554, 842528, 1369108, 1685056, 2738216, 5476432, 10952864, 21905728]

約数ペア:

[(1, 21905728), (2, 10952864), (4, 5476432), (8, 2738216), (13, 1685056), (16, 1369108), (26, 842528), (32, 684554), (52, 421264), (64, 342277), (104, 210632), (113, 193856), (208, 105316), (226, 96928), (233, 94016), (416, 52658), (452, 48464), (466, 47008), (832, 26329), (904, 24232), (932, 23504), (1469, 14912), (1808, 12116), (1864, 11752), (2938, 7456), (3029, 7232), (3616, 6058), (3728, 5876)]