21180645

素因数分解:

$3^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1021}}^1$

素因数の和:1493

約数の個数: 24

約数和(自身を含む): 36828792

約数和(自身を除く): 15648147

約数列:

[1, 3, 5, 9, 15, 45, 461, 1021, 1383, 2305, 3063, 4149, 5105, 6915, 9189, 15315, 20745, 45945, 470681, 1412043, 2353405, 4236129, 7060215, 21180645]

約数ペア:

[(1, 21180645), (3, 7060215), (5, 4236129), (9, 2353405), (15, 1412043), (45, 470681), (461, 45945), (1021, 20745), (1383, 15315), (2305, 9189), (3063, 6915), (4149, 5105)]