18656180

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 21986380

約数列:

[1, 2, 4, 5, 10, 20, 47, 89, 94, 178, 188, 223, 235, 356, 445, 446, 470, 890, 892, 940, 1115, 1780, 2230, 4183, 4460, 8366, 10481, 16732, 19847, 20915, 20962, 39694, 41830, 41924, 52405, 79388, 83660, 99235, 104810, 198470, 209620, 396940, 932809, 1865618, 3731236, 4664045, 9328090, 18656180]

約数ペア:

[(1, 18656180), (2, 9328090), (4, 4664045), (5, 3731236), (10, 1865618), (20, 932809), (47, 396940), (89, 209620), (94, 198470), (178, 104810), (188, 99235), (223, 83660), (235, 79388), (356, 52405), (445, 41924), (446, 41830), (470, 39694), (890, 20962), (892, 20915), (940, 19847), (1115, 16732), (1780, 10481), (2230, 8366), (4183, 4460)]