21096075

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1$

素因数の和:325

約数の個数: 96

約数和(自身を含む): 46996992

約数和(自身を除く): 25900917

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 25, 33, 35, 39, 55, 65, 75, 77, 91, 105, 143, 165, 175, 195, 231, 273, 275, 281, 325, 385, 429, 455, 525, 715, 825, 843, 975, 1001, 1155, 1365, 1405, 1925, 1967, 2145, 2275, 3003, 3091, 3575, 3653, 4215, 5005, 5775, 5901, 6825, 7025, 9273, 9835, 10725, 10959, 15015, 15455, 18265, 21075, 21637, 25025, 25571, 29505, 40183, 46365, 49175, 54795, 64911, 75075, 76713, 77275, 91325, 108185, 120549, 127855, 147525, 200915, 231825, 273975, 281281, 324555, 383565, 540925, 602745, 639275, 843843, 1004575, 1406405, 1622775, 1917825, 3013725, 4219215, 7032025, 21096075]

約数ペア:

[(1, 21096075), (3, 7032025), (5, 4219215), (7, 3013725), (11, 1917825), (13, 1622775), (15, 1406405), (21, 1004575), (25, 843843), (33, 639275), (35, 602745), (39, 540925), (55, 383565), (65, 324555), (75, 281281), (77, 273975), (91, 231825), (105, 200915), (143, 147525), (165, 127855), (175, 120549), (195, 108185), (231, 91325), (273, 77275), (275, 76713), (281, 75075), (325, 64911), (385, 54795), (429, 49175), (455, 46365), (525, 40183), (715, 29505), (825, 25571), (843, 25025), (975, 21637), (1001, 21075), (1155, 18265), (1365, 15455), (1405, 15015), (1925, 10959), (1967, 10725), (2145, 9835), (2275, 9273), (3003, 7025), (3091, 6825), (3575, 5901), (3653, 5775), (4215, 5005)]