21512025

素因数分解:

$3^2\times 5^2\times {\mathrm{67}}^1\times {\mathrm{1427}}^1$

素因数の和:1510

約数の個数: 36

約数和(自身を含む): 39132912

約数和(自身を除く): 17620887

約数列:

[1, 3, 5, 9, 15, 25, 45, 67, 75, 201, 225, 335, 603, 1005, 1427, 1675, 3015, 4281, 5025, 7135, 12843, 15075, 21405, 35675, 64215, 95609, 107025, 286827, 321075, 478045, 860481, 1434135, 2390225, 4302405, 7170675, 21512025]

約数ペア:

[(1, 21512025), (3, 7170675), (5, 4302405), (9, 2390225), (15, 1434135), (25, 860481), (45, 478045), (67, 321075), (75, 286827), (201, 107025), (225, 95609), (335, 64215), (603, 35675), (1005, 21405), (1427, 15075), (1675, 12843), (3015, 7135), (4281, 5025)]