18768520

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{1307}}^1$

素因数の和:1677

約数の個数: 32

約数和(自身を含む): 42379200

約数和(自身を除く): 23610680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1307, 1436, 1795, 2614, 2872, 3590, 5228, 6535, 7180, 10456, 13070, 14360, 26140, 52280, 469213, 938426, 1876852, 2346065, 3753704, 4692130, 9384260, 18768520]

約数ペア:

[(1, 18768520), (2, 9384260), (4, 4692130), (5, 3753704), (8, 2346065), (10, 1876852), (20, 938426), (40, 469213), (359, 52280), (718, 26140), (1307, 14360), (1436, 13070), (1795, 10456), (2614, 7180), (2872, 6535), (3590, 5228)]