21213544

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 25235096

約数列:

[1, 2, 4, 8, 11, 22, 23, 44, 46, 47, 88, 92, 94, 184, 188, 223, 253, 376, 446, 506, 517, 892, 1012, 1034, 1081, 1784, 2024, 2068, 2162, 2453, 4136, 4324, 4906, 5129, 8648, 9812, 10258, 10481, 11891, 19624, 20516, 20962, 23782, 41032, 41924, 47564, 56419, 83848, 95128, 112838, 115291, 225676, 230582, 241063, 451352, 461164, 482126, 922328, 964252, 1928504, 2651693, 5303386, 10606772, 21213544]

約数ペア:

[(1, 21213544), (2, 10606772), (4, 5303386), (8, 2651693), (11, 1928504), (22, 964252), (23, 922328), (44, 482126), (46, 461164), (47, 451352), (88, 241063), (92, 230582), (94, 225676), (184, 115291), (188, 112838), (223, 95128), (253, 83848), (376, 56419), (446, 47564), (506, 41924), (517, 41032), (892, 23782), (1012, 20962), (1034, 20516), (1081, 19624), (1784, 11891), (2024, 10481), (2068, 10258), (2162, 9812), (2453, 8648), (4136, 5129), (4324, 4906)]