20804161780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{6833}}^1$

素因数の和:7009

約数の個数: 96

約数和(自身を含む): 46291875840

約数和(自身を除く): 25487714060

約数列:

[1, 2, 4, 5, 10, 20, 41, 47, 79, 82, 94, 158, 164, 188, 205, 235, 316, 395, 410, 470, 790, 820, 940, 1580, 1927, 3239, 3713, 3854, 6478, 6833, 7426, 7708, 9635, 12956, 13666, 14852, 16195, 18565, 19270, 27332, 32390, 34165, 37130, 38540, 64780, 68330, 74260, 136660, 152233, 280153, 304466, 321151, 539807, 560306, 608932, 642302, 761165, 1079614, 1120612, 1284604, 1400765, 1522330, 1605755, 2159228, 2699035, 2801530, 3044660, 3211510, 5398070, 5603060, 6423020, 10796140, 13167191, 22132087, 25370929, 26334382, 44264174, 50741858, 52668764, 65835955, 88528348, 101483716, 110660435, 126854645, 131671910, 221320870, 253709290, 263343820, 442641740, 507418580, 1040208089, 2080416178, 4160832356, 5201040445, 10402080890, 20804161780]

約数ペア:

[(1, 20804161780), (2, 10402080890), (4, 5201040445), (5, 4160832356), (10, 2080416178), (20, 1040208089), (41, 507418580), (47, 442641740), (79, 263343820), (82, 253709290), (94, 221320870), (158, 131671910), (164, 126854645), (188, 110660435), (205, 101483716), (235, 88528348), (316, 65835955), (395, 52668764), (410, 50741858), (470, 44264174), (790, 26334382), (820, 25370929), (940, 22132087), (1580, 13167191), (1927, 10796140), (3239, 6423020), (3713, 5603060), (3854, 5398070), (6478, 3211510), (6833, 3044660), (7426, 2801530), (7708, 2699035), (9635, 2159228), (12956, 1605755), (13666, 1522330), (14852, 1400765), (16195, 1284604), (18565, 1120612), (19270, 1079614), (27332, 761165), (32390, 642302), (34165, 608932), (37130, 560306), (38540, 539807), (64780, 321151), (68330, 304466), (74260, 280153), (136660, 152233)]