25694420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21061}}^1$

素因数の和:21131

約数の個数: 24

約数和(自身を含む): 54845448

約数和(自身を除く): 29151028

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 21061, 42122, 84244, 105305, 210610, 421220, 1284721, 2569442, 5138884, 6423605, 12847210, 25694420]

約数ペア:

[(1, 25694420), (2, 12847210), (4, 6423605), (5, 5138884), (10, 2569442), (20, 1284721), (61, 421220), (122, 210610), (244, 105305), (305, 84244), (610, 42122), (1220, 21061)]