18768805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 26396928

約数和(自身を除く): 7628123

約数列:

[1, 5, 11, 23, 37, 55, 115, 185, 253, 401, 407, 851, 1265, 2005, 2035, 4255, 4411, 9223, 9361, 14837, 22055, 46115, 46805, 74185, 101453, 163207, 341251, 507265, 816035, 1706255, 3753761, 18768805]

約数ペア:

[(1, 18768805), (5, 3753761), (11, 1706255), (23, 816035), (37, 507265), (55, 341251), (115, 163207), (185, 101453), (253, 74185), (401, 46805), (407, 46115), (851, 22055), (1265, 14837), (2005, 9361), (2035, 9223), (4255, 4411)]