21211528

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{541}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 44633700

約数和(自身を除く): 23422172

約数列:

[1, 2, 4, 8, 13, 26, 29, 52, 58, 104, 116, 169, 232, 338, 377, 541, 676, 754, 1082, 1352, 1508, 2164, 3016, 4328, 4901, 7033, 9802, 14066, 15689, 19604, 28132, 31378, 39208, 56264, 62756, 91429, 125512, 182858, 203957, 365716, 407914, 731432, 815828, 1631656, 2651441, 5302882, 10605764, 21211528]

約数ペア:

[(1, 21211528), (2, 10605764), (4, 5302882), (8, 2651441), (13, 1631656), (26, 815828), (29, 731432), (52, 407914), (58, 365716), (104, 203957), (116, 182858), (169, 125512), (232, 91429), (338, 62756), (377, 56264), (541, 39208), (676, 31378), (754, 28132), (1082, 19604), (1352, 15689), (1508, 14066), (2164, 9802), (3016, 7033), (4328, 4901)]