215005570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{8311}}^1$

素因数の和:8530

約数の個数: 32

約数和(自身を含む): 418924800

約数和(自身を除く): 203919230

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 995, 1990, 2587, 5174, 8311, 12935, 16622, 25870, 41555, 83110, 108043, 216086, 540215, 1080430, 1653889, 3307778, 8269445, 16538890, 21500557, 43001114, 107502785, 215005570]

約数ペア:

[(1, 215005570), (2, 107502785), (5, 43001114), (10, 21500557), (13, 16538890), (26, 8269445), (65, 3307778), (130, 1653889), (199, 1080430), (398, 540215), (995, 216086), (1990, 108043), (2587, 83110), (5174, 41555), (8311, 25870), (12935, 16622)]