20718780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2719}}^1$

素因数の和:2858

約数の個数: 48

約数和(自身を含む): 58490880

約数和(自身を除く): 37772100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 127, 254, 381, 508, 635, 762, 1270, 1524, 1905, 2540, 2719, 3810, 5438, 7620, 8157, 10876, 13595, 16314, 27190, 32628, 40785, 54380, 81570, 163140, 345313, 690626, 1035939, 1381252, 1726565, 2071878, 3453130, 4143756, 5179695, 6906260, 10359390, 20718780]

約数ペア:

[(1, 20718780), (2, 10359390), (3, 6906260), (4, 5179695), (5, 4143756), (6, 3453130), (10, 2071878), (12, 1726565), (15, 1381252), (20, 1035939), (30, 690626), (60, 345313), (127, 163140), (254, 81570), (381, 54380), (508, 40785), (635, 32628), (762, 27190), (1270, 16314), (1524, 13595), (1905, 10876), (2540, 8157), (2719, 7620), (3810, 5438)]