87972975

素因数分解:

$3^2\times 5^2\times {\mathrm{390991}}^1$

素因数の和:391007

約数の個数: 18

約数和(自身を含む): 157569776

約数和(自身を除く): 69596801

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 390991, 1172973, 1954955, 3518919, 5864865, 9774775, 17594595, 29324325, 87972975]

約数ペア:

[(1, 87972975), (3, 29324325), (5, 17594595), (9, 9774775), (15, 5864865), (25, 3518919), (45, 1954955), (75, 1172973), (225, 390991)]