215908425

素因数分解:

$3^2\times 5^2\times {\mathrm{401}}^1\times {\mathrm{2393}}^1$

素因数の和:2810

約数の個数: 36

約数和(自身を含む): 387842364

約数和(自身を除く): 171933939

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 401, 1203, 2005, 2393, 3609, 6015, 7179, 10025, 11965, 18045, 21537, 30075, 35895, 59825, 90225, 107685, 179475, 538425, 959593, 2878779, 4797965, 8636337, 14393895, 23989825, 43181685, 71969475, 215908425]

約数ペア:

[(1, 215908425), (3, 71969475), (5, 43181685), (9, 23989825), (15, 14393895), (25, 8636337), (45, 4797965), (75, 2878779), (225, 959593), (401, 538425), (1203, 179475), (2005, 107685), (2393, 90225), (3609, 59825), (6015, 35895), (7179, 30075), (10025, 21537), (11965, 18045)]