21445955

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{1667}}^1$

素因数の和:1786

約数の個数: 16

約数和(自身を含む): 26901504

約数和(自身を除く): 5455549

約数列:

[1, 5, 31, 83, 155, 415, 1667, 2573, 8335, 12865, 51677, 138361, 258385, 691805, 4289191, 21445955]

約数ペア:

[(1, 21445955), (5, 4289191), (31, 691805), (83, 258385), (155, 138361), (415, 51677), (1667, 12865), (2573, 8335)]