21802815

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6133}}^1$

素因数の和:6223

約数の個数: 24

約数和(自身を含む): 38276160

約数和(自身を除く): 16473345

約数列:

[1, 3, 5, 9, 15, 45, 79, 237, 395, 711, 1185, 3555, 6133, 18399, 30665, 55197, 91995, 275985, 484507, 1453521, 2422535, 4360563, 7267605, 21802815]

約数ペア:

[(1, 21802815), (3, 7267605), (5, 4360563), (9, 2422535), (15, 1453521), (45, 484507), (79, 275985), (237, 91995), (395, 55197), (711, 30665), (1185, 18399), (3555, 6133)]