20789025940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^2\times {\mathrm{173}}^1$

素因数の和:434

約数の個数: 144

約数和(自身を含む): 48188367360

約数和(自身を除く): 27399341420

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 101, 124, 155, 173, 190, 202, 310, 346, 380, 404, 505, 589, 620, 692, 865, 1010, 1178, 1730, 1919, 2020, 2356, 2945, 3131, 3287, 3460, 3838, 5363, 5890, 6262, 6574, 7676, 9595, 10201, 10726, 11780, 12524, 13148, 15655, 16435, 17473, 19190, 20402, 21452, 26815, 31310, 32870, 34946, 38380, 40804, 51005, 53630, 59489, 62620, 65740, 69892, 87365, 101897, 102010, 107260, 118978, 174730, 193819, 203794, 204020, 237956, 297445, 316231, 331987, 349460, 387638, 407588, 509485, 541663, 594890, 632462, 663974, 775276, 969095, 1018970, 1083326, 1189780, 1264924, 1327948, 1581155, 1659935, 1764773, 1938190, 2037940, 2166652, 2708315, 3162310, 3319870, 3529546, 3876380, 5416630, 6008389, 6324620, 6639740, 7059092, 8823865, 10291597, 10833260, 12016778, 17647730, 20583194, 24033556, 30041945, 33530687, 35295460, 41166388, 51457985, 54707963, 60083890, 67061374, 102915970, 109415926, 120167780, 134122748, 167653435, 205831940, 218831852, 273539815, 335306870, 547079630, 670613740, 1039451297, 1094159260, 2078902594, 4157805188, 5197256485, 10394512970, 20789025940]

約数ペア:

[(1, 20789025940), (2, 10394512970), (4, 5197256485), (5, 4157805188), (10, 2078902594), (19, 1094159260), (20, 1039451297), (31, 670613740), (38, 547079630), (62, 335306870), (76, 273539815), (95, 218831852), (101, 205831940), (124, 167653435), (155, 134122748), (173, 120167780), (190, 109415926), (202, 102915970), (310, 67061374), (346, 60083890), (380, 54707963), (404, 51457985), (505, 41166388), (589, 35295460), (620, 33530687), (692, 30041945), (865, 24033556), (1010, 20583194), (1178, 17647730), (1730, 12016778), (1919, 10833260), (2020, 10291597), (2356, 8823865), (2945, 7059092), (3131, 6639740), (3287, 6324620), (3460, 6008389), (3838, 5416630), (5363, 3876380), (5890, 3529546), (6262, 3319870), (6574, 3162310), (7676, 2708315), (9595, 2166652), (10201, 2037940), (10726, 1938190), (11780, 1764773), (12524, 1659935), (13148, 1581155), (15655, 1327948), (16435, 1264924), (17473, 1189780), (19190, 1083326), (20402, 1018970), (21452, 969095), (26815, 775276), (31310, 663974), (32870, 632462), (34946, 594890), (38380, 541663), (40804, 509485), (51005, 407588), (53630, 387638), (59489, 349460), (62620, 331987), (65740, 316231), (69892, 297445), (87365, 237956), (101897, 204020), (102010, 203794), (107260, 193819), (118978, 174730)]