21240675

素因数分解:

$3^2\times 5^2\times {\mathrm{67}}^1\times {\mathrm{1409}}^1$

素因数の和:1492

約数の個数: 36

約数和(自身を含む): 38639640

約数和(自身を除く): 17398965

約数列:

[1, 3, 5, 9, 15, 25, 45, 67, 75, 201, 225, 335, 603, 1005, 1409, 1675, 3015, 4227, 5025, 7045, 12681, 15075, 21135, 35225, 63405, 94403, 105675, 283209, 317025, 472015, 849627, 1416045, 2360075, 4248135, 7080225, 21240675]

約数ペア:

[(1, 21240675), (3, 7080225), (5, 4248135), (9, 2360075), (15, 1416045), (25, 849627), (45, 472015), (67, 317025), (75, 283209), (201, 105675), (225, 94403), (335, 63405), (603, 35225), (1005, 21135), (1409, 15075), (1675, 12681), (3015, 7045), (4227, 5025)]