21872097

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9839}}^1$

素因数の和:9877

約数の個数: 24

約数和(自身を含む): 35817600

約数和(自身を除く): 13945503

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 9839, 29517, 88551, 127907, 186941, 383721, 560823, 1151163, 1682469, 2430233, 7290699, 21872097]

約数ペア:

[(1, 21872097), (3, 7290699), (9, 2430233), (13, 1682469), (19, 1151163), (39, 560823), (57, 383721), (117, 186941), (171, 127907), (247, 88551), (741, 29517), (2223, 9839)]