21522015

素因数分解:

$3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3491}}^1$

素因数の和:3639

約数の個数: 24

約数和(自身を含む): 37587888

約数和(自身を除く): 16065873

約数列:

[1, 3, 5, 9, 15, 45, 137, 411, 685, 1233, 2055, 3491, 6165, 10473, 17455, 31419, 52365, 157095, 478267, 1434801, 2391335, 4304403, 7174005, 21522015]

約数ペア:

[(1, 21522015), (3, 7174005), (5, 4304403), (9, 2391335), (15, 1434801), (45, 478267), (137, 157095), (411, 52365), (685, 31419), (1233, 17455), (2055, 10473), (3491, 6165)]