21586175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3907}}^1$

素因数の和:3947

約数の個数: 24

約数和(自身を含む): 30529296

約数和(自身を除く): 8943121

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 3907, 5525, 19535, 50791, 66419, 97675, 253955, 332095, 863447, 1269775, 1660475, 4317235, 21586175]

約数ペア:

[(1, 21586175), (5, 4317235), (13, 1660475), (17, 1269775), (25, 863447), (65, 332095), (85, 253955), (221, 97675), (325, 66419), (425, 50791), (1105, 19535), (3907, 5525)]