20439969

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{4157}}^1$

素因数の和:4320

約数の個数: 16

約数和(自身を含む): 29937600

約数和(自身を除く): 9497631

約数列:

[1, 3, 11, 33, 149, 447, 1639, 4157, 4917, 12471, 45727, 137181, 619393, 1858179, 6813323, 20439969]

約数ペア:

[(1, 20439969), (3, 6813323), (11, 1858179), (33, 619393), (149, 137181), (447, 45727), (1639, 12471), (4157, 4917)]