21411364

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{457}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 43627248

約数和(自身を除く): 22215884

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 53, 68, 106, 212, 221, 442, 457, 689, 884, 901, 914, 1378, 1802, 1828, 2756, 3604, 5941, 7769, 11713, 11882, 15538, 23426, 23764, 24221, 31076, 46852, 48442, 96884, 100997, 201994, 314873, 403988, 411757, 629746, 823514, 1259492, 1647028, 5352841, 10705682, 21411364]

約数ペア:

[(1, 21411364), (2, 10705682), (4, 5352841), (13, 1647028), (17, 1259492), (26, 823514), (34, 629746), (52, 411757), (53, 403988), (68, 314873), (106, 201994), (212, 100997), (221, 96884), (442, 48442), (457, 46852), (689, 31076), (884, 24221), (901, 23764), (914, 23426), (1378, 15538), (1802, 11882), (1828, 11713), (2756, 7769), (3604, 5941)]