21000251997

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{1747}}^1\times {\mathrm{26189}}^1$

素因数の和:27962

約数の個数: 32

約数和(自身を含む): 32961686400

約数和(自身を除く): 11961434403

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 1747, 5241, 15723, 26189, 29699, 47169, 78567, 89097, 235701, 267291, 445213, 707103, 801873, 1335639, 4006917, 12020751, 45752183, 137256549, 411769647, 777787111, 1235308941, 2333361333, 7000083999, 21000251997]

約数ペア:

[(1, 21000251997), (3, 7000083999), (9, 2333361333), (17, 1235308941), (27, 777787111), (51, 411769647), (153, 137256549), (459, 45752183), (1747, 12020751), (5241, 4006917), (15723, 1335639), (26189, 801873), (29699, 707103), (47169, 445213), (78567, 267291), (89097, 235701)]