20198835

素因数分解:

$3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{953}}^1$

素因数の和:1124

約数の個数: 32

約数和(自身を含む): 36175680

約数和(自身を除く): 15976845

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157, 471, 785, 953, 1413, 2355, 2859, 4239, 4765, 7065, 8577, 14295, 21195, 25731, 42885, 128655, 149621, 448863, 748105, 1346589, 2244315, 4039767, 6732945, 20198835]

約数ペア:

[(1, 20198835), (3, 6732945), (5, 4039767), (9, 2244315), (15, 1346589), (27, 748105), (45, 448863), (135, 149621), (157, 128655), (471, 42885), (785, 25731), (953, 21195), (1413, 14295), (2355, 8577), (2859, 7065), (4239, 4765)]