81954470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{4231}}^1$

素因数の和:4400

約数の個数: 32

約数和(自身を含む): 159969600

約数和(自身を除く): 78015130

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 149, 298, 745, 1490, 1937, 3874, 4231, 8462, 9685, 19370, 21155, 42310, 55003, 110006, 275015, 550030, 630419, 1260838, 3152095, 6304190, 8195447, 16390894, 40977235, 81954470]

約数ペア:

[(1, 81954470), (2, 40977235), (5, 16390894), (10, 8195447), (13, 6304190), (26, 3152095), (65, 1260838), (130, 630419), (149, 550030), (298, 275015), (745, 110006), (1490, 55003), (1937, 42310), (3874, 21155), (4231, 19370), (8462, 9685)]