21242007

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{9043}}^1$

素因数の和:9084

約数の個数: 20

約数和(自身を含む): 32829720

約数和(自身を除く): 11587713

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 9043, 27129, 81387, 244161, 262247, 732483, 786741, 2360223, 7080669, 21242007]

約数ペア:

[(1, 21242007), (3, 7080669), (9, 2360223), (27, 786741), (29, 732483), (81, 262247), (87, 244161), (261, 81387), (783, 27129), (2349, 9043)]