19702020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:134

約数の個数: 144

約数和(自身を含む): 62717760

約数和(自身を除く): 43015740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 29, 30, 39, 52, 58, 60, 65, 67, 78, 87, 116, 130, 134, 145, 156, 169, 174, 195, 201, 260, 268, 290, 335, 338, 348, 377, 390, 402, 435, 507, 580, 670, 676, 754, 780, 804, 845, 870, 871, 1005, 1014, 1131, 1340, 1508, 1690, 1740, 1742, 1885, 1943, 2010, 2028, 2262, 2535, 2613, 3380, 3484, 3770, 3886, 4020, 4355, 4524, 4901, 5070, 5226, 5655, 5829, 7540, 7772, 8710, 9715, 9802, 10140, 10452, 11310, 11323, 11658, 13065, 14703, 17420, 19430, 19604, 22620, 22646, 23316, 24505, 25259, 26130, 29145, 29406, 33969, 38860, 45292, 49010, 50518, 52260, 56615, 58290, 58812, 67938, 73515, 75777, 98020, 101036, 113230, 116580, 126295, 135876, 147030, 151554, 169845, 226460, 252590, 294060, 303108, 328367, 339690, 378885, 505180, 656734, 679380, 757770, 985101, 1313468, 1515540, 1641835, 1970202, 3283670, 3940404, 4925505, 6567340, 9851010, 19702020]

約数ペア:

[(1, 19702020), (2, 9851010), (3, 6567340), (4, 4925505), (5, 3940404), (6, 3283670), (10, 1970202), (12, 1641835), (13, 1515540), (15, 1313468), (20, 985101), (26, 757770), (29, 679380), (30, 656734), (39, 505180), (52, 378885), (58, 339690), (60, 328367), (65, 303108), (67, 294060), (78, 252590), (87, 226460), (116, 169845), (130, 151554), (134, 147030), (145, 135876), (156, 126295), (169, 116580), (174, 113230), (195, 101036), (201, 98020), (260, 75777), (268, 73515), (290, 67938), (335, 58812), (338, 58290), (348, 56615), (377, 52260), (390, 50518), (402, 49010), (435, 45292), (507, 38860), (580, 33969), (670, 29406), (676, 29145), (754, 26130), (780, 25259), (804, 24505), (845, 23316), (870, 22646), (871, 22620), (1005, 19604), (1014, 19430), (1131, 17420), (1340, 14703), (1508, 13065), (1690, 11658), (1740, 11323), (1742, 11310), (1885, 10452), (1943, 10140), (2010, 9802), (2028, 9715), (2262, 8710), (2535, 7772), (2613, 7540), (3380, 5829), (3484, 5655), (3770, 5226), (3886, 5070), (4020, 4901), (4355, 4524)]