9906220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 22176000

約数和(自身を除く): 12269780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 199, 262, 380, 398, 524, 655, 796, 995, 1310, 1990, 2489, 2620, 3781, 3980, 4978, 7562, 9956, 12445, 15124, 18905, 24890, 26069, 37810, 49780, 52138, 75620, 104276, 130345, 260690, 495311, 521380, 990622, 1981244, 2476555, 4953110, 9906220]

約数ペア:

[(1, 9906220), (2, 4953110), (4, 2476555), (5, 1981244), (10, 990622), (19, 521380), (20, 495311), (38, 260690), (76, 130345), (95, 104276), (131, 75620), (190, 52138), (199, 49780), (262, 37810), (380, 26069), (398, 24890), (524, 18905), (655, 15124), (796, 12445), (995, 9956), (1310, 7562), (1990, 4978), (2489, 3980), (2620, 3781)]