21218055

素因数分解:

$3^1\times 5^1\times {\mathrm{983}}^1\times {\mathrm{1439}}^1$

素因数の和:2430

約数の個数: 16

約数和(自身を含む): 34007040

約数和(自身を除く): 12788985

約数列:

[1, 3, 5, 15, 983, 1439, 2949, 4317, 4915, 7195, 14745, 21585, 1414537, 4243611, 7072685, 21218055]

約数ペア:

[(1, 21218055), (3, 7072685), (5, 4243611), (15, 1414537), (983, 21585), (1439, 14745), (2949, 7195), (4317, 4915)]