18965985

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{30839}}^1$

素因数の和:30888

約数の個数: 16

約数和(自身を含む): 31086720

約数和(自身を除く): 12120735

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 30839, 92517, 154195, 462585, 1264399, 3793197, 6321995, 18965985]

約数ペア:

[(1, 18965985), (3, 6321995), (5, 3793197), (15, 1264399), (41, 462585), (123, 154195), (205, 92517), (615, 30839)]