21180235545

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{263}}^1\times {\mathrm{36523}}^1$

素因数の和:36811

約数の個数: 72

約数和(自身を含む): 42869825856

約数和(自身を除く): 21689590311

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 263, 315, 441, 735, 789, 1315, 1841, 2205, 2367, 3945, 5523, 9205, 11835, 12887, 16569, 27615, 36523, 38661, 64435, 82845, 109569, 115983, 182615, 193305, 255661, 328707, 547845, 579915, 766983, 1278305, 1643535, 1789627, 2300949, 3834915, 5368881, 8948135, 9605549, 11504745, 16106643, 26844405, 28816647, 48027745, 67238843, 80533215, 86449941, 144083235, 201716529, 336194215, 432249705, 470671901, 605149587, 1008582645, 1412015703, 2353359505, 3025747935, 4236047109, 7060078515, 21180235545]

約数ペア:

[(1, 21180235545), (3, 7060078515), (5, 4236047109), (7, 3025747935), (9, 2353359505), (15, 1412015703), (21, 1008582645), (35, 605149587), (45, 470671901), (49, 432249705), (63, 336194215), (105, 201716529), (147, 144083235), (245, 86449941), (263, 80533215), (315, 67238843), (441, 48027745), (735, 28816647), (789, 26844405), (1315, 16106643), (1841, 11504745), (2205, 9605549), (2367, 8948135), (3945, 5368881), (5523, 3834915), (9205, 2300949), (11835, 1789627), (12887, 1643535), (16569, 1278305), (27615, 766983), (36523, 579915), (38661, 547845), (64435, 328707), (82845, 255661), (109569, 193305), (115983, 182615)]