1289276780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{18371}}^1$

素因数の和:18431

約数の個数: 72

約数和(自身を含む): 3078779760

約数和(自身を除く): 1789502980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 121, 145, 220, 242, 290, 319, 484, 580, 605, 638, 1210, 1276, 1595, 2420, 3190, 3509, 6380, 7018, 14036, 17545, 18371, 35090, 36742, 70180, 73484, 91855, 183710, 202081, 367420, 404162, 532759, 808324, 1010405, 1065518, 2020810, 2131036, 2222891, 2663795, 4041620, 4445782, 5327590, 5860349, 8891564, 10655180, 11114455, 11720698, 22228910, 23441396, 29301745, 44457820, 58603490, 64463839, 117206980, 128927678, 257855356, 322319195, 644638390, 1289276780]

約数ペア:

[(1, 1289276780), (2, 644638390), (4, 322319195), (5, 257855356), (10, 128927678), (11, 117206980), (20, 64463839), (22, 58603490), (29, 44457820), (44, 29301745), (55, 23441396), (58, 22228910), (110, 11720698), (116, 11114455), (121, 10655180), (145, 8891564), (220, 5860349), (242, 5327590), (290, 4445782), (319, 4041620), (484, 2663795), (580, 2222891), (605, 2131036), (638, 2020810), (1210, 1065518), (1276, 1010405), (1595, 808324), (2420, 532759), (3190, 404162), (3509, 367420), (6380, 202081), (7018, 183710), (14036, 91855), (17545, 73484), (18371, 70180), (35090, 36742)]