21103397

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 26013120

約数和(自身を除く): 4909723

約数列:

[1, 7, 23, 41, 139, 161, 287, 529, 943, 973, 3197, 3703, 5699, 6601, 21689, 22379, 39893, 73531, 131077, 151823, 514717, 917539, 3014771, 21103397]

約数ペア:

[(1, 21103397), (7, 3014771), (23, 917539), (41, 514717), (139, 151823), (161, 131077), (287, 73531), (529, 39893), (943, 22379), (973, 21689), (3197, 6601), (3703, 5699)]