20051120

素因数分解:

$2^4\times 5^1\times {\mathrm{263}}^1\times {\mathrm{953}}^1$

素因数の和:1229

約数の個数: 40

約数和(自身を含む): 46845216

約数和(自身を除く): 26794096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263, 526, 953, 1052, 1315, 1906, 2104, 2630, 3812, 4208, 4765, 5260, 7624, 9530, 10520, 15248, 19060, 21040, 38120, 76240, 250639, 501278, 1002556, 1253195, 2005112, 2506390, 4010224, 5012780, 10025560, 20051120]

約数ペア:

[(1, 20051120), (2, 10025560), (4, 5012780), (5, 4010224), (8, 2506390), (10, 2005112), (16, 1253195), (20, 1002556), (40, 501278), (80, 250639), (263, 76240), (526, 38120), (953, 21040), (1052, 19060), (1315, 15248), (1906, 10520), (2104, 9530), (2630, 7624), (3812, 5260), (4208, 4765)]