20839620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20431}}^1$

素因数の和:20460

約数の個数: 48

約数和(自身を含む): 61786368

約数和(自身を除く): 40946748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20431, 40862, 61293, 81724, 102155, 122586, 204310, 245172, 306465, 347327, 408620, 612930, 694654, 1041981, 1225860, 1389308, 1736635, 2083962, 3473270, 4167924, 5209905, 6946540, 10419810, 20839620]

約数ペア:

[(1, 20839620), (2, 10419810), (3, 6946540), (4, 5209905), (5, 4167924), (6, 3473270), (10, 2083962), (12, 1736635), (15, 1389308), (17, 1225860), (20, 1041981), (30, 694654), (34, 612930), (51, 408620), (60, 347327), (68, 306465), (85, 245172), (102, 204310), (170, 122586), (204, 102155), (255, 81724), (340, 61293), (510, 40862), (1020, 20431)]