21639825

素因数分解:

$3^3\times 5^2\times {\mathrm{32059}}^1$

素因数の和:32078

約数の個数: 24

約数和(自身を含む): 39754400

約数和(自身を除く): 18114575

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 32059, 96177, 160295, 288531, 480885, 801475, 865593, 1442655, 2404425, 4327965, 7213275, 21639825]

約数ペア:

[(1, 21639825), (3, 7213275), (5, 4327965), (9, 2404425), (15, 1442655), (25, 865593), (27, 801475), (45, 480885), (75, 288531), (135, 160295), (225, 96177), (675, 32059)]