21815055

素因数分解:

$3^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{571}}^1$

素因数の和:868

約数の個数: 32

約数和(自身を含む): 38987520

約数和(自身を除く): 17172465

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 283, 571, 849, 1415, 1713, 2547, 2855, 4245, 5139, 7641, 8565, 12735, 15417, 25695, 38205, 77085, 161593, 484779, 807965, 1454337, 2423895, 4363011, 7271685, 21815055]

約数ペア:

[(1, 21815055), (3, 7271685), (5, 4363011), (9, 2423895), (15, 1454337), (27, 807965), (45, 484779), (135, 161593), (283, 77085), (571, 38205), (849, 25695), (1415, 15417), (1713, 12735), (2547, 8565), (2855, 7641), (4245, 5139)]