19972503

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{1297}}^1$

素因数の和:1391

約数の個数: 24

約数和(自身を含む): 30373200

約数和(自身を除く): 10400697

約数列:

[1, 3, 9, 29, 59, 87, 177, 261, 531, 1297, 1711, 3891, 5133, 11673, 15399, 37613, 76523, 112839, 229569, 338517, 688707, 2219167, 6657501, 19972503]

約数ペア:

[(1, 19972503), (3, 6657501), (9, 2219167), (29, 688707), (59, 338517), (87, 229569), (177, 112839), (261, 76523), (531, 37613), (1297, 15399), (1711, 11673), (3891, 5133)]