21630015

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1181}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 42041376

約数和(自身を除く): 20411361

約数列:

[1, 3, 5, 9, 11, 15, 33, 37, 45, 55, 99, 111, 165, 185, 333, 407, 495, 555, 1181, 1221, 1665, 2035, 3543, 3663, 5905, 6105, 10629, 12991, 17715, 18315, 38973, 43697, 53145, 64955, 116919, 131091, 194865, 218485, 393273, 480667, 584595, 655455, 1442001, 1966365, 2403335, 4326003, 7210005, 21630015]

約数ペア:

[(1, 21630015), (3, 7210005), (5, 4326003), (9, 2403335), (11, 1966365), (15, 1442001), (33, 655455), (37, 584595), (45, 480667), (55, 393273), (99, 218485), (111, 194865), (165, 131091), (185, 116919), (333, 64955), (407, 53145), (495, 43697), (555, 38973), (1181, 18315), (1221, 17715), (1665, 12991), (2035, 10629), (3543, 6105), (3663, 5905)]