18856485

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^2$

素因数の和:342

約数の個数: 36

約数和(自身を含む): 34829028

約数和(自身を除く): 15972543

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 157, 255, 471, 765, 785, 1413, 2355, 2669, 7065, 8007, 13345, 24021, 24649, 40035, 73947, 120105, 123245, 221841, 369735, 419033, 1109205, 1257099, 2095165, 3771297, 6285495, 18856485]

約数ペア:

[(1, 18856485), (3, 6285495), (5, 3771297), (9, 2095165), (15, 1257099), (17, 1109205), (45, 419033), (51, 369735), (85, 221841), (153, 123245), (157, 120105), (255, 73947), (471, 40035), (765, 24649), (785, 24021), (1413, 13345), (2355, 8007), (2669, 7065)]