638825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:145

約数の個数: 24

約数和(自身を含む): 910656

約数和(自身を除く): 271831

約数列:

[1, 5, 11, 23, 25, 55, 101, 115, 253, 275, 505, 575, 1111, 1265, 2323, 2525, 5555, 6325, 11615, 25553, 27775, 58075, 127765, 638825]

約数ペア:

[(1, 638825), (5, 127765), (11, 58075), (23, 27775), (25, 25553), (55, 11615), (101, 6325), (115, 5555), (253, 2525), (275, 2323), (505, 1265), (575, 1111)]