21895203

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 11489757

約数列:

[1, 3, 11, 29, 33, 87, 137, 167, 319, 411, 501, 957, 1507, 1837, 3973, 4521, 4843, 5511, 11919, 14529, 22879, 43703, 53273, 68637, 131109, 159819, 251669, 663491, 755007, 1990473, 7298401, 21895203]

約数ペア:

[(1, 21895203), (3, 7298401), (11, 1990473), (29, 755007), (33, 663491), (87, 251669), (137, 159819), (167, 131109), (319, 68637), (411, 53273), (501, 43703), (957, 22879), (1507, 14529), (1837, 11919), (3973, 5511), (4521, 4843)]