2139575

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^2$

素因数の和:155

約数の個数: 18

約数和(自身を含む): 2814552

約数和(自身を除く): 674977

約数列:

[1, 5, 23, 25, 61, 115, 305, 575, 1403, 1525, 3721, 7015, 18605, 35075, 85583, 93025, 427915, 2139575]

約数ペア:

[(1, 2139575), (5, 427915), (23, 93025), (25, 85583), (61, 35075), (115, 18605), (305, 7015), (575, 3721), (1403, 1525)]