20805814920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{508451}}^1$

素因数の和:508507

約数の個数: 128

約数和(自身を含む): 70288404480

約数和(自身を除く): 49482589560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 31, 33, 40, 44, 55, 60, 62, 66, 88, 93, 110, 120, 124, 132, 155, 165, 186, 220, 248, 264, 310, 330, 341, 372, 440, 465, 620, 660, 682, 744, 930, 1023, 1240, 1320, 1364, 1705, 1860, 2046, 2728, 3410, 3720, 4092, 5115, 6820, 8184, 10230, 13640, 20460, 40920, 508451, 1016902, 1525353, 2033804, 2542255, 3050706, 4067608, 5084510, 5592961, 6101412, 7626765, 10169020, 11185922, 12202824, 15253530, 15761981, 16778883, 20338040, 22371844, 27964805, 30507060, 31523962, 33557766, 44743688, 47285943, 55929610, 61014120, 63047924, 67115532, 78809905, 83894415, 94571886, 111859220, 126095848, 134231064, 157619810, 167788830, 173381791, 189143772, 223718440, 236429715, 315239620, 335577660, 346763582, 378287544, 472859430, 520145373, 630479240, 671155320, 693527164, 866908955, 945718860, 1040290746, 1387054328, 1733817910, 1891437720, 2080581492, 2600726865, 3467635820, 4161162984, 5201453730, 6935271640, 10402907460, 20805814920]

約数ペア:

[(1, 20805814920), (2, 10402907460), (3, 6935271640), (4, 5201453730), (5, 4161162984), (6, 3467635820), (8, 2600726865), (10, 2080581492), (11, 1891437720), (12, 1733817910), (15, 1387054328), (20, 1040290746), (22, 945718860), (24, 866908955), (30, 693527164), (31, 671155320), (33, 630479240), (40, 520145373), (44, 472859430), (55, 378287544), (60, 346763582), (62, 335577660), (66, 315239620), (88, 236429715), (93, 223718440), (110, 189143772), (120, 173381791), (124, 167788830), (132, 157619810), (155, 134231064), (165, 126095848), (186, 111859220), (220, 94571886), (248, 83894415), (264, 78809905), (310, 67115532), (330, 63047924), (341, 61014120), (372, 55929610), (440, 47285943), (465, 44743688), (620, 33557766), (660, 31523962), (682, 30507060), (744, 27964805), (930, 22371844), (1023, 20338040), (1240, 16778883), (1320, 15761981), (1364, 15253530), (1705, 12202824), (1860, 11185922), (2046, 10169020), (2728, 7626765), (3410, 6101412), (3720, 5592961), (4092, 5084510), (5115, 4067608), (6820, 3050706), (8184, 2542255), (10230, 2033804), (13640, 1525353), (20460, 1016902), (40920, 508451)]