18813620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2203}}^1$

素因数の和:2280

約数の個数: 48

約数和(自身を含む): 45913728

約数和(自身を除く): 27100108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2203, 4270, 4406, 8540, 8812, 11015, 15421, 22030, 30842, 44060, 61684, 77105, 134383, 154210, 268766, 308420, 537532, 671915, 940681, 1343830, 1881362, 2687660, 3762724, 4703405, 9406810, 18813620]

約数ペア:

[(1, 18813620), (2, 9406810), (4, 4703405), (5, 3762724), (7, 2687660), (10, 1881362), (14, 1343830), (20, 940681), (28, 671915), (35, 537532), (61, 308420), (70, 268766), (122, 154210), (140, 134383), (244, 77105), (305, 61684), (427, 44060), (610, 30842), (854, 22030), (1220, 15421), (1708, 11015), (2135, 8812), (2203, 8540), (4270, 4406)]