138795020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{76261}}^1$

素因数の和:76290

約数の個数: 48

約数和(自身を含む): 358736448

約数和(自身を除く): 219941428

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 76261, 152522, 305044, 381305, 533827, 762610, 991393, 1067654, 1525220, 1982786, 2135308, 2669135, 3965572, 4956965, 5338270, 6939751, 9913930, 10676540, 13879502, 19827860, 27759004, 34698755, 69397510, 138795020]

約数ペア:

[(1, 138795020), (2, 69397510), (4, 34698755), (5, 27759004), (7, 19827860), (10, 13879502), (13, 10676540), (14, 9913930), (20, 6939751), (26, 5338270), (28, 4956965), (35, 3965572), (52, 2669135), (65, 2135308), (70, 1982786), (91, 1525220), (130, 1067654), (140, 991393), (182, 762610), (260, 533827), (364, 381305), (455, 305044), (910, 152522), (1820, 76261)]