18788380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{569}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 24112100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 127, 130, 254, 260, 508, 569, 635, 1138, 1270, 1651, 2276, 2540, 2845, 3302, 5690, 6604, 7397, 8255, 11380, 14794, 16510, 29588, 33020, 36985, 72263, 73970, 144526, 147940, 289052, 361315, 722630, 939419, 1445260, 1878838, 3757676, 4697095, 9394190, 18788380]

約数ペア:

[(1, 18788380), (2, 9394190), (4, 4697095), (5, 3757676), (10, 1878838), (13, 1445260), (20, 939419), (26, 722630), (52, 361315), (65, 289052), (127, 147940), (130, 144526), (254, 73970), (260, 72263), (508, 36985), (569, 33020), (635, 29588), (1138, 16510), (1270, 14794), (1651, 11380), (2276, 8255), (2540, 7397), (2845, 6604), (3302, 5690)]