20256280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2423}}^1$

素因数の和:2464

約数の個数: 64

約数和(自身を含む): 52358400

約数和(自身を除く): 32102120

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2423, 4180, 4846, 8360, 9692, 12115, 19384, 24230, 26653, 46037, 48460, 53306, 92074, 96920, 106612, 133265, 184148, 213224, 230185, 266530, 368296, 460370, 506407, 533060, 920740, 1012814, 1066120, 1841480, 2025628, 2532035, 4051256, 5064070, 10128140, 20256280]

約数ペア:

[(1, 20256280), (2, 10128140), (4, 5064070), (5, 4051256), (8, 2532035), (10, 2025628), (11, 1841480), (19, 1066120), (20, 1012814), (22, 920740), (38, 533060), (40, 506407), (44, 460370), (55, 368296), (76, 266530), (88, 230185), (95, 213224), (110, 184148), (152, 133265), (190, 106612), (209, 96920), (220, 92074), (380, 53306), (418, 48460), (440, 46037), (760, 26653), (836, 24230), (1045, 19384), (1672, 12115), (2090, 9692), (2423, 8360), (4180, 4846)]