21109515

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8741}}^1$

素因数の和:8779

約数の個数: 32

約数和(自身を含む): 40283136

約数和(自身を除く): 19173621

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 8741, 26223, 43705, 61187, 131115, 183561, 201043, 305935, 603129, 917805, 1005215, 1407301, 3015645, 4221903, 7036505, 21109515]

約数ペア:

[(1, 21109515), (3, 7036505), (5, 4221903), (7, 3015645), (15, 1407301), (21, 1005215), (23, 917805), (35, 603129), (69, 305935), (105, 201043), (115, 183561), (161, 131115), (345, 61187), (483, 43705), (805, 26223), (2415, 8741)]