20521473

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1087}}^1$

素因数の和:1157

約数の個数: 32

約数和(自身を含む): 33423360

約数和(自身を除く): 12901887

約数列:

[1, 3, 7, 21, 29, 31, 87, 93, 203, 217, 609, 651, 899, 1087, 2697, 3261, 6293, 7609, 18879, 22827, 31523, 33697, 94569, 101091, 220661, 235879, 661983, 707637, 977213, 2931639, 6840491, 20521473]

約数ペア:

[(1, 20521473), (3, 6840491), (7, 2931639), (21, 977213), (29, 707637), (31, 661983), (87, 235879), (93, 220661), (203, 101091), (217, 94569), (609, 33697), (651, 31523), (899, 22827), (1087, 18879), (2697, 7609), (3261, 6293)]