21903365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{3943}}^1$

素因数の和:4060

約数の個数: 16

約数和(自身を含む): 28964736

約数和(自身を除く): 7061371

約数列:

[1, 5, 11, 55, 101, 505, 1111, 3943, 5555, 19715, 43373, 216865, 398243, 1991215, 4380673, 21903365]

約数ペア:

[(1, 21903365), (5, 4380673), (11, 1991215), (55, 398243), (101, 216865), (505, 43373), (1111, 19715), (3943, 5555)]