21000655215

素因数分解:

$3^3\times 5^1\times {\mathrm{155560409}}^1$

素因数の和:155560423

約数の個数: 16

約数和(自身を含む): 37334498400

約数和(自身を除く): 16333843185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 155560409, 466681227, 777802045, 1400043681, 2333406135, 4200131043, 7000218405, 21000655215]

約数ペア:

[(1, 21000655215), (3, 7000218405), (5, 4200131043), (9, 2333406135), (15, 1400043681), (27, 777802045), (45, 466681227), (135, 155560409)]