20265975

素因数分解:

$3^2\times 5^2\times {\mathrm{90071}}^1$

素因数の和:90087

約数の個数: 18

約数和(自身を含む): 36299016

約数和(自身を除く): 16033041

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 90071, 270213, 450355, 810639, 1351065, 2251775, 4053195, 6755325, 20265975]

約数ペア:

[(1, 20265975), (3, 6755325), (5, 4053195), (9, 2251775), (15, 1351065), (25, 810639), (45, 450355), (75, 270213), (225, 90071)]