20906748

素因数分解:

$2^2\times 3^5\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:313

約数の個数: 72

約数和(自身を含む): 55556592

約数和(自身を除く): 34649844

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 137, 157, 162, 243, 274, 314, 324, 411, 471, 486, 548, 628, 822, 942, 972, 1233, 1413, 1644, 1884, 2466, 2826, 3699, 4239, 4932, 5652, 7398, 8478, 11097, 12717, 14796, 16956, 21509, 22194, 25434, 33291, 38151, 43018, 44388, 50868, 64527, 66582, 76302, 86036, 129054, 133164, 152604, 193581, 258108, 387162, 580743, 774324, 1161486, 1742229, 2322972, 3484458, 5226687, 6968916, 10453374, 20906748]

約数ペア:

[(1, 20906748), (2, 10453374), (3, 6968916), (4, 5226687), (6, 3484458), (9, 2322972), (12, 1742229), (18, 1161486), (27, 774324), (36, 580743), (54, 387162), (81, 258108), (108, 193581), (137, 152604), (157, 133164), (162, 129054), (243, 86036), (274, 76302), (314, 66582), (324, 64527), (411, 50868), (471, 44388), (486, 43018), (548, 38151), (628, 33291), (822, 25434), (942, 22194), (972, 21509), (1233, 16956), (1413, 14796), (1644, 12717), (1884, 11097), (2466, 8478), (2826, 7398), (3699, 5652), (4239, 4932)]