18514528

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 38374560

約数和(自身を除く): 19860032

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 71, 116, 142, 232, 281, 284, 464, 562, 568, 928, 1124, 1136, 2059, 2248, 2272, 4118, 4496, 8149, 8236, 8992, 16298, 16472, 19951, 32596, 32944, 39902, 65192, 65888, 79804, 130384, 159608, 260768, 319216, 578579, 638432, 1157158, 2314316, 4628632, 9257264, 18514528]

約数ペア:

[(1, 18514528), (2, 9257264), (4, 4628632), (8, 2314316), (16, 1157158), (29, 638432), (32, 578579), (58, 319216), (71, 260768), (116, 159608), (142, 130384), (232, 79804), (281, 65888), (284, 65192), (464, 39902), (562, 32944), (568, 32596), (928, 19951), (1124, 16472), (1136, 16298), (2059, 8992), (2248, 8236), (2272, 8149), (4118, 4496)]