19827445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 27786240

約数和(自身を除く): 7958795

約数列:

[1, 5, 11, 29, 31, 55, 145, 155, 319, 341, 401, 899, 1595, 1705, 2005, 4411, 4495, 9889, 11629, 12431, 22055, 49445, 58145, 62155, 127919, 136741, 360499, 639595, 683705, 1802495, 3965489, 19827445]

約数ペア:

[(1, 19827445), (5, 3965489), (11, 1802495), (29, 683705), (31, 639595), (55, 360499), (145, 136741), (155, 127919), (319, 62155), (341, 58145), (401, 49445), (899, 22055), (1595, 12431), (1705, 11629), (2005, 9889), (4411, 4495)]