20361460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:365

約数の個数: 72

約数和(自身を含む): 50561280

約数和(自身を除く): 30199820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 245, 263, 316, 395, 490, 526, 553, 790, 980, 1052, 1106, 1315, 1580, 1841, 2212, 2630, 2765, 3682, 3871, 5260, 5530, 7364, 7742, 9205, 11060, 12887, 15484, 18410, 19355, 20777, 25774, 36820, 38710, 41554, 51548, 64435, 77420, 83108, 103885, 128870, 145439, 207770, 257740, 290878, 415540, 581756, 727195, 1018073, 1454390, 2036146, 2908780, 4072292, 5090365, 10180730, 20361460]

約数ペア:

[(1, 20361460), (2, 10180730), (4, 5090365), (5, 4072292), (7, 2908780), (10, 2036146), (14, 1454390), (20, 1018073), (28, 727195), (35, 581756), (49, 415540), (70, 290878), (79, 257740), (98, 207770), (140, 145439), (158, 128870), (196, 103885), (245, 83108), (263, 77420), (316, 64435), (395, 51548), (490, 41554), (526, 38710), (553, 36820), (790, 25774), (980, 20777), (1052, 19355), (1106, 18410), (1315, 15484), (1580, 12887), (1841, 11060), (2212, 9205), (2630, 7742), (2765, 7364), (3682, 5530), (3871, 5260)]