20780791720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{3571}}^1$

素因数の和:3664

約数の個数: 192

約数和(自身を含む): 54872778240

約数和(自身を除く): 34091986520

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 31, 38, 40, 52, 62, 65, 76, 95, 104, 124, 130, 152, 155, 190, 247, 248, 260, 310, 361, 380, 403, 494, 520, 589, 620, 722, 760, 806, 988, 1178, 1235, 1240, 1444, 1612, 1805, 1976, 2015, 2356, 2470, 2888, 2945, 3224, 3571, 3610, 4030, 4693, 4712, 4940, 5890, 7142, 7220, 7657, 8060, 9386, 9880, 11191, 11780, 14284, 14440, 15314, 16120, 17855, 18772, 22382, 23465, 23560, 28568, 30628, 35710, 37544, 38285, 44764, 46423, 46930, 55955, 61256, 67849, 71420, 76570, 89528, 92846, 93860, 110701, 111910, 135698, 142840, 145483, 153140, 185692, 187720, 221402, 223820, 232115, 271396, 290966, 306280, 339245, 371384, 442804, 447640, 464230, 542792, 553505, 581932, 678490, 727415, 882037, 885608, 928460, 1107010, 1163864, 1289131, 1356980, 1439113, 1454830, 1764074, 1856920, 2103319, 2214020, 2578262, 2713960, 2878226, 2909660, 3528148, 4206638, 4410185, 4428040, 5156524, 5756452, 5819320, 6445655, 7056296, 7195565, 8413276, 8820370, 10313048, 10516595, 11512904, 12891310, 14391130, 16758703, 16826552, 17640740, 21033190, 25782620, 27343147, 28782260, 33517406, 35281480, 39963061, 42066380, 51565240, 54686294, 57564520, 67034812, 79926122, 83793515, 84132760, 109372588, 134069624, 136715735, 159852244, 167587030, 199815305, 218745176, 273431470, 319704488, 335174060, 399630610, 519519793, 546862940, 670348120, 799261220, 1039039586, 1093725880, 1598522440, 2078079172, 2597598965, 4156158344, 5195197930, 10390395860, 20780791720]

約数ペア:

[(1, 20780791720), (2, 10390395860), (4, 5195197930), (5, 4156158344), (8, 2597598965), (10, 2078079172), (13, 1598522440), (19, 1093725880), (20, 1039039586), (26, 799261220), (31, 670348120), (38, 546862940), (40, 519519793), (52, 399630610), (62, 335174060), (65, 319704488), (76, 273431470), (95, 218745176), (104, 199815305), (124, 167587030), (130, 159852244), (152, 136715735), (155, 134069624), (190, 109372588), (247, 84132760), (248, 83793515), (260, 79926122), (310, 67034812), (361, 57564520), (380, 54686294), (403, 51565240), (494, 42066380), (520, 39963061), (589, 35281480), (620, 33517406), (722, 28782260), (760, 27343147), (806, 25782620), (988, 21033190), (1178, 17640740), (1235, 16826552), (1240, 16758703), (1444, 14391130), (1612, 12891310), (1805, 11512904), (1976, 10516595), (2015, 10313048), (2356, 8820370), (2470, 8413276), (2888, 7195565), (2945, 7056296), (3224, 6445655), (3571, 5819320), (3610, 5756452), (4030, 5156524), (4693, 4428040), (4712, 4410185), (4940, 4206638), (5890, 3528148), (7142, 2909660), (7220, 2878226), (7657, 2713960), (8060, 2578262), (9386, 2214020), (9880, 2103319), (11191, 1856920), (11780, 1764074), (14284, 1454830), (14440, 1439113), (15314, 1356980), (16120, 1289131), (17855, 1163864), (18772, 1107010), (22382, 928460), (23465, 885608), (23560, 882037), (28568, 727415), (30628, 678490), (35710, 581932), (37544, 553505), (38285, 542792), (44764, 464230), (46423, 447640), (46930, 442804), (55955, 371384), (61256, 339245), (67849, 306280), (71420, 290966), (76570, 271396), (89528, 232115), (92846, 223820), (93860, 221402), (110701, 187720), (111910, 185692), (135698, 153140), (142840, 145483)]