21482968

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{419}}^1$

素因数の和:484

約数の個数: 64

約数和(自身を含む): 47628000

約数和(自身を除く): 26145032

約数列:

[1, 2, 4, 8, 13, 17, 26, 29, 34, 52, 58, 68, 104, 116, 136, 221, 232, 377, 419, 442, 493, 754, 838, 884, 986, 1508, 1676, 1768, 1972, 3016, 3352, 3944, 5447, 6409, 7123, 10894, 12151, 12818, 14246, 21788, 24302, 25636, 28492, 43576, 48604, 51272, 56984, 92599, 97208, 157963, 185198, 206567, 315926, 370396, 413134, 631852, 740792, 826268, 1263704, 1652536, 2685371, 5370742, 10741484, 21482968]

約数ペア:

[(1, 21482968), (2, 10741484), (4, 5370742), (8, 2685371), (13, 1652536), (17, 1263704), (26, 826268), (29, 740792), (34, 631852), (52, 413134), (58, 370396), (68, 315926), (104, 206567), (116, 185198), (136, 157963), (221, 97208), (232, 92599), (377, 56984), (419, 51272), (442, 48604), (493, 43576), (754, 28492), (838, 25636), (884, 24302), (986, 21788), (1508, 14246), (1676, 12818), (1768, 12151), (1972, 10894), (3016, 7123), (3352, 6409), (3944, 5447)]