31648540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{20551}}^1$

素因数の和:20578

約数の個数: 48

約数和(自身を含む): 82865664

約数和(自身を除く): 51217124

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 20551, 41102, 82204, 102755, 143857, 205510, 226061, 287714, 411020, 452122, 575428, 719285, 904244, 1130305, 1438570, 1582427, 2260610, 2877140, 3164854, 4521220, 6329708, 7912135, 15824270, 31648540]

約数ペア:

[(1, 31648540), (2, 15824270), (4, 7912135), (5, 6329708), (7, 4521220), (10, 3164854), (11, 2877140), (14, 2260610), (20, 1582427), (22, 1438570), (28, 1130305), (35, 904244), (44, 719285), (55, 575428), (70, 452122), (77, 411020), (110, 287714), (140, 226061), (154, 205510), (220, 143857), (308, 102755), (385, 82204), (770, 41102), (1540, 20551)]