21216210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2689}}^1$

素因数の和:2962

約数の個数: 32

約数和(自身を含む): 51131520

約数和(自身を除く): 29915310

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 263, 526, 789, 1315, 1578, 2630, 2689, 3945, 5378, 7890, 8067, 13445, 16134, 26890, 40335, 80670, 707207, 1414414, 2121621, 3536035, 4243242, 7072070, 10608105, 21216210]

約数ペア:

[(1, 21216210), (2, 10608105), (3, 7072070), (5, 4243242), (6, 3536035), (10, 2121621), (15, 1414414), (30, 707207), (263, 80670), (526, 40335), (789, 26890), (1315, 16134), (1578, 13445), (2630, 8067), (2689, 7890), (3945, 5378)]