21657728

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:337

約数の個数: 64

約数和(自身を含む): 47093400

約数和(自身を除く): 25435672

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 37, 64, 68, 74, 128, 136, 148, 269, 272, 296, 538, 544, 592, 629, 1076, 1088, 1184, 1258, 2152, 2176, 2368, 2516, 4304, 4573, 4736, 5032, 8608, 9146, 9953, 10064, 17216, 18292, 19906, 20128, 34432, 36584, 39812, 40256, 73168, 79624, 80512, 146336, 159248, 169201, 292672, 318496, 338402, 585344, 636992, 676804, 1273984, 1353608, 2707216, 5414432, 10828864, 21657728]

約数ペア:

[(1, 21657728), (2, 10828864), (4, 5414432), (8, 2707216), (16, 1353608), (17, 1273984), (32, 676804), (34, 636992), (37, 585344), (64, 338402), (68, 318496), (74, 292672), (128, 169201), (136, 159248), (148, 146336), (269, 80512), (272, 79624), (296, 73168), (538, 40256), (544, 39812), (592, 36584), (629, 34432), (1076, 20128), (1088, 19906), (1184, 18292), (1258, 17216), (2152, 10064), (2176, 9953), (2368, 9146), (2516, 8608), (4304, 5032), (4573, 4736)]