21338751

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{947}}^1$

素因数の和:1023

約数の個数: 32

約数和(自身を含む): 34583040

約数和(自身を除く): 13244289

約数列:

[1, 3, 7, 21, 29, 37, 87, 111, 203, 259, 609, 777, 947, 1073, 2841, 3219, 6629, 7511, 19887, 22533, 27463, 35039, 82389, 105117, 192241, 245273, 576723, 735819, 1016131, 3048393, 7112917, 21338751]

約数ペア:

[(1, 21338751), (3, 7112917), (7, 3048393), (21, 1016131), (29, 735819), (37, 576723), (87, 245273), (111, 192241), (203, 105117), (259, 82389), (609, 35039), (777, 27463), (947, 22533), (1073, 19887), (2841, 7511), (3219, 6629)]