18881275

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4691}}^1$

素因数の和:4731

約数の個数: 24

約数和(自身を含む): 27926784

約数和(自身を除く): 9045509

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 4691, 23455, 32837, 107893, 117275, 164185, 539465, 755251, 820925, 2697325, 3776255, 18881275]

約数ペア:

[(1, 18881275), (5, 3776255), (7, 2697325), (23, 820925), (25, 755251), (35, 539465), (115, 164185), (161, 117275), (175, 107893), (575, 32837), (805, 23455), (4025, 4691)]