20298575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{331}}^1$

素因数の和:575

約数の個数: 24

約数和(自身を含む): 27664896

約数和(自身を除く): 7366321

約数列:

[1, 5, 11, 25, 55, 223, 275, 331, 1115, 1655, 2453, 3641, 5575, 8275, 12265, 18205, 61325, 73813, 91025, 369065, 811943, 1845325, 4059715, 20298575]

約数ペア:

[(1, 20298575), (5, 4059715), (11, 1845325), (25, 811943), (55, 369065), (223, 91025), (275, 73813), (331, 61325), (1115, 18205), (1655, 12265), (2453, 8275), (3641, 5575)]