205420250

素因数分解:

$2^1\times 5^3\times 7^2\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:481

約数の個数: 96

約数和(自身を含む): 459360720

約数和(自身を除く): 253940470

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 41, 49, 50, 70, 82, 98, 125, 175, 205, 245, 250, 287, 350, 409, 410, 490, 574, 818, 875, 1025, 1225, 1435, 1750, 2009, 2045, 2050, 2450, 2863, 2870, 4018, 4090, 5125, 5726, 6125, 7175, 10045, 10225, 10250, 12250, 14315, 14350, 16769, 20041, 20090, 20450, 28630, 33538, 35875, 40082, 50225, 51125, 71575, 71750, 83845, 100205, 100450, 102250, 117383, 143150, 167690, 200410, 234766, 251125, 357875, 419225, 501025, 502250, 586915, 715750, 821681, 838450, 1002050, 1173830, 1643362, 2096125, 2505125, 2934575, 4108405, 4192250, 5010250, 5869150, 8216810, 14672875, 20542025, 29345750, 41084050, 102710125, 205420250]

約数ペア:

[(1, 205420250), (2, 102710125), (5, 41084050), (7, 29345750), (10, 20542025), (14, 14672875), (25, 8216810), (35, 5869150), (41, 5010250), (49, 4192250), (50, 4108405), (70, 2934575), (82, 2505125), (98, 2096125), (125, 1643362), (175, 1173830), (205, 1002050), (245, 838450), (250, 821681), (287, 715750), (350, 586915), (409, 502250), (410, 501025), (490, 419225), (574, 357875), (818, 251125), (875, 234766), (1025, 200410), (1225, 167690), (1435, 143150), (1750, 117383), (2009, 102250), (2045, 100450), (2050, 100205), (2450, 83845), (2863, 71750), (2870, 71575), (4018, 51125), (4090, 50225), (5125, 40082), (5726, 35875), (6125, 33538), (7175, 28630), (10045, 20450), (10225, 20090), (10250, 20041), (12250, 16769), (14315, 14350)]