20105500

素因数分解:

$2^2\times 5^3\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:607

約数の個数: 48

約数和(自身を含む): 44553600

約数和(自身を除く): 24448100

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 125, 158, 250, 316, 395, 500, 509, 790, 1018, 1580, 1975, 2036, 2545, 3950, 5090, 7900, 9875, 10180, 12725, 19750, 25450, 39500, 40211, 50900, 63625, 80422, 127250, 160844, 201055, 254500, 402110, 804220, 1005275, 2010550, 4021100, 5026375, 10052750, 20105500]

約数ペア:

[(1, 20105500), (2, 10052750), (4, 5026375), (5, 4021100), (10, 2010550), (20, 1005275), (25, 804220), (50, 402110), (79, 254500), (100, 201055), (125, 160844), (158, 127250), (250, 80422), (316, 63625), (395, 50900), (500, 40211), (509, 39500), (790, 25450), (1018, 19750), (1580, 12725), (1975, 10180), (2036, 9875), (2545, 7900), (3950, 5090)]