20438912

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 44724960

約数和(自身を除く): 24286048

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 71, 104, 128, 142, 173, 208, 284, 346, 416, 568, 692, 832, 923, 1136, 1384, 1664, 1846, 2249, 2272, 2768, 3692, 4498, 4544, 5536, 7384, 8996, 9088, 11072, 12283, 14768, 17992, 22144, 24566, 29536, 35984, 49132, 59072, 71968, 98264, 118144, 143936, 159679, 196528, 287872, 319358, 393056, 638716, 786112, 1277432, 1572224, 2554864, 5109728, 10219456, 20438912]

約数ペア:

[(1, 20438912), (2, 10219456), (4, 5109728), (8, 2554864), (13, 1572224), (16, 1277432), (26, 786112), (32, 638716), (52, 393056), (64, 319358), (71, 287872), (104, 196528), (128, 159679), (142, 143936), (173, 118144), (208, 98264), (284, 71968), (346, 59072), (416, 49132), (568, 35984), (692, 29536), (832, 24566), (923, 22144), (1136, 17992), (1384, 14768), (1664, 12283), (1846, 11072), (2249, 9088), (2272, 8996), (2768, 7384), (3692, 5536), (4498, 4544)]