20397015

素因数分解:

$3^4\times 5^1\times {\mathrm{50363}}^1$

素因数の和:50380

約数の個数: 20

約数和(自身を含む): 36564264

約数和(自身を除く): 16167249

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 50363, 151089, 251815, 453267, 755445, 1359801, 2266335, 4079403, 6799005, 20397015]

約数ペア:

[(1, 20397015), (3, 6799005), (5, 4079403), (9, 2266335), (15, 1359801), (27, 755445), (45, 453267), (81, 251815), (135, 151089), (405, 50363)]