21940269

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1021}}^1$

素因数の和:1085

約数の個数: 32

約数和(自身を含む): 34339200

約数和(自身を除く): 12398931

約数列:

[1, 3, 13, 19, 29, 39, 57, 87, 247, 377, 551, 741, 1021, 1131, 1653, 3063, 7163, 13273, 19399, 21489, 29609, 39819, 58197, 88827, 252187, 384917, 562571, 756561, 1154751, 1687713, 7313423, 21940269]

約数ペア:

[(1, 21940269), (3, 7313423), (13, 1687713), (19, 1154751), (29, 756561), (39, 562571), (57, 384917), (87, 252187), (247, 88827), (377, 58197), (551, 39819), (741, 29609), (1021, 21489), (1131, 19399), (1653, 13273), (3063, 7163)]