20190040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{947}}^1$

素因数の和:1012

約数の個数: 64

約数和(自身を含む): 50168160

約数和(自身を除く): 29978120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 947, 1066, 1640, 1894, 2132, 2665, 3788, 4264, 4735, 5330, 7576, 9470, 10660, 12311, 18940, 21320, 24622, 37880, 38827, 49244, 61555, 77654, 98488, 123110, 155308, 194135, 246220, 310616, 388270, 492440, 504751, 776540, 1009502, 1553080, 2019004, 2523755, 4038008, 5047510, 10095020, 20190040]

約数ペア:

[(1, 20190040), (2, 10095020), (4, 5047510), (5, 4038008), (8, 2523755), (10, 2019004), (13, 1553080), (20, 1009502), (26, 776540), (40, 504751), (41, 492440), (52, 388270), (65, 310616), (82, 246220), (104, 194135), (130, 155308), (164, 123110), (205, 98488), (260, 77654), (328, 61555), (410, 49244), (520, 38827), (533, 37880), (820, 24622), (947, 21320), (1066, 18940), (1640, 12311), (1894, 10660), (2132, 9470), (2665, 7576), (3788, 5330), (4264, 4735)]