21521728

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:311

約数の個数: 56

約数和(自身を含む): 45866304

約数和(自身を除く): 24344576

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 131, 136, 151, 262, 272, 302, 524, 544, 604, 1048, 1088, 1208, 2096, 2227, 2416, 2567, 4192, 4454, 4832, 5134, 8384, 8908, 9664, 10268, 17816, 19781, 20536, 35632, 39562, 41072, 71264, 79124, 82144, 142528, 158248, 164288, 316496, 336277, 632992, 672554, 1265984, 1345108, 2690216, 5380432, 10760864, 21521728]

約数ペア:

[(1, 21521728), (2, 10760864), (4, 5380432), (8, 2690216), (16, 1345108), (17, 1265984), (32, 672554), (34, 632992), (64, 336277), (68, 316496), (131, 164288), (136, 158248), (151, 142528), (262, 82144), (272, 79124), (302, 71264), (524, 41072), (544, 39562), (604, 35632), (1048, 20536), (1088, 19781), (1208, 17816), (2096, 10268), (2227, 9664), (2416, 8908), (2567, 8384), (4192, 5134), (4454, 4832)]