31152020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1123}}^1$

素因数の和:1224

約数の個数: 48

約数和(自身を含む): 69867840

約数和(自身を除く): 38715820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 73, 76, 95, 146, 190, 292, 365, 380, 730, 1123, 1387, 1460, 2246, 2774, 4492, 5548, 5615, 6935, 11230, 13870, 21337, 22460, 27740, 42674, 81979, 85348, 106685, 163958, 213370, 327916, 409895, 426740, 819790, 1557601, 1639580, 3115202, 6230404, 7788005, 15576010, 31152020]

約数ペア:

[(1, 31152020), (2, 15576010), (4, 7788005), (5, 6230404), (10, 3115202), (19, 1639580), (20, 1557601), (38, 819790), (73, 426740), (76, 409895), (95, 327916), (146, 213370), (190, 163958), (292, 106685), (365, 85348), (380, 81979), (730, 42674), (1123, 27740), (1387, 22460), (1460, 21337), (2246, 13870), (2774, 11230), (4492, 6935), (5548, 5615)]