20164846840

素因数分解:

$2^3\times 5^1\times {\mathrm{1907}}^1\times {\mathrm{264353}}^1$

素因数の和:266271

約数の個数: 32

約数和(自身を含む): 45394868880

約数和(自身を除く): 25230022040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1907, 3814, 7628, 9535, 15256, 19070, 38140, 76280, 264353, 528706, 1057412, 1321765, 2114824, 2643530, 5287060, 10574120, 504121171, 1008242342, 2016484684, 2520605855, 4032969368, 5041211710, 10082423420, 20164846840]

約数ペア:

[(1, 20164846840), (2, 10082423420), (4, 5041211710), (5, 4032969368), (8, 2520605855), (10, 2016484684), (20, 1008242342), (40, 504121171), (1907, 10574120), (3814, 5287060), (7628, 2643530), (9535, 2114824), (15256, 1321765), (19070, 1057412), (38140, 528706), (76280, 264353)]