21059974

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 18131066

約数列:

[1, 2, 13, 17, 26, 29, 31, 34, 53, 58, 62, 106, 221, 377, 403, 442, 493, 527, 689, 754, 806, 899, 901, 986, 1054, 1378, 1537, 1643, 1798, 1802, 3074, 3286, 6409, 6851, 11687, 11713, 12818, 13702, 15283, 19981, 21359, 23374, 23426, 26129, 27931, 30566, 39962, 42718, 47647, 52258, 55862, 95294, 198679, 339677, 363103, 397358, 619411, 679354, 726206, 809999, 1238822, 1619998, 10529987, 21059974]

約数ペア:

[(1, 21059974), (2, 10529987), (13, 1619998), (17, 1238822), (26, 809999), (29, 726206), (31, 679354), (34, 619411), (53, 397358), (58, 363103), (62, 339677), (106, 198679), (221, 95294), (377, 55862), (403, 52258), (442, 47647), (493, 42718), (527, 39962), (689, 30566), (754, 27931), (806, 26129), (899, 23426), (901, 23374), (986, 21359), (1054, 19981), (1378, 15283), (1537, 13702), (1643, 12818), (1798, 11713), (1802, 11687), (3074, 6851), (3286, 6409)]