20560860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1109}}^1$

素因数の和:1227

約数の個数: 72

約数和(自身を含む): 63030240

約数和(自身を除く): 42469380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 927, 1030, 1109, 1236, 1545, 1854, 2060, 2218, 3090, 3327, 3708, 4436, 4635, 5545, 6180, 6654, 9270, 9981, 11090, 13308, 16635, 18540, 19962, 22180, 33270, 39924, 49905, 66540, 99810, 114227, 199620, 228454, 342681, 456908, 571135, 685362, 1028043, 1142270, 1370724, 1713405, 2056086, 2284540, 3426810, 4112172, 5140215, 6853620, 10280430, 20560860]

約数ペア:

[(1, 20560860), (2, 10280430), (3, 6853620), (4, 5140215), (5, 4112172), (6, 3426810), (9, 2284540), (10, 2056086), (12, 1713405), (15, 1370724), (18, 1142270), (20, 1028043), (30, 685362), (36, 571135), (45, 456908), (60, 342681), (90, 228454), (103, 199620), (180, 114227), (206, 99810), (309, 66540), (412, 49905), (515, 39924), (618, 33270), (927, 22180), (1030, 19962), (1109, 18540), (1236, 16635), (1545, 13308), (1854, 11090), (2060, 9981), (2218, 9270), (3090, 6654), (3327, 6180), (3708, 5545), (4436, 4635)]