521145380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:298

約数の個数: 144

約数和(自身を含む): 1327233600

約数和(自身を除く): 806088220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 83, 86, 98, 140, 149, 166, 172, 196, 215, 245, 298, 301, 332, 415, 430, 490, 581, 596, 602, 745, 830, 860, 980, 1043, 1162, 1204, 1490, 1505, 1660, 2086, 2107, 2324, 2905, 2980, 3010, 3569, 4067, 4172, 4214, 5215, 5810, 6020, 6407, 7138, 7301, 8134, 8428, 10430, 10535, 11620, 12367, 12814, 14276, 14602, 16268, 17845, 20335, 20860, 21070, 24734, 24983, 25628, 29204, 32035, 35690, 36505, 40670, 42140, 44849, 49468, 49966, 61835, 64070, 71380, 73010, 81340, 86569, 89698, 99932, 123670, 124915, 128140, 146020, 173138, 174881, 179396, 224245, 247340, 249830, 313943, 346276, 349762, 432845, 448490, 499660, 531781, 605983, 627886, 699524, 865690, 874405, 896980, 1063562, 1211966, 1255772, 1569715, 1731380, 1748810, 2127124, 2423932, 2658905, 3029915, 3139430, 3497620, 3722467, 5317810, 6059830, 6278860, 7444934, 10635620, 12119660, 14889868, 18612335, 26057269, 37224670, 52114538, 74449340, 104229076, 130286345, 260572690, 521145380]

約数ペア:

[(1, 521145380), (2, 260572690), (4, 130286345), (5, 104229076), (7, 74449340), (10, 52114538), (14, 37224670), (20, 26057269), (28, 18612335), (35, 14889868), (43, 12119660), (49, 10635620), (70, 7444934), (83, 6278860), (86, 6059830), (98, 5317810), (140, 3722467), (149, 3497620), (166, 3139430), (172, 3029915), (196, 2658905), (215, 2423932), (245, 2127124), (298, 1748810), (301, 1731380), (332, 1569715), (415, 1255772), (430, 1211966), (490, 1063562), (581, 896980), (596, 874405), (602, 865690), (745, 699524), (830, 627886), (860, 605983), (980, 531781), (1043, 499660), (1162, 448490), (1204, 432845), (1490, 349762), (1505, 346276), (1660, 313943), (2086, 249830), (2107, 247340), (2324, 224245), (2905, 179396), (2980, 174881), (3010, 173138), (3569, 146020), (4067, 128140), (4172, 124915), (4214, 123670), (5215, 99932), (5810, 89698), (6020, 86569), (6407, 81340), (7138, 73010), (7301, 71380), (8134, 64070), (8428, 61835), (10430, 49966), (10535, 49468), (11620, 44849), (12367, 42140), (12814, 40670), (14276, 36505), (14602, 35690), (16268, 32035), (17845, 29204), (20335, 25628), (20860, 24983), (21070, 24734)]