20453538

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^3\times {\mathrm{71}}^1$

素因数の和:140

約数の個数: 64

約数和(自身を含む): 50042880

約数和(自身を除く): 29589342

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 71, 114, 133, 142, 213, 266, 361, 399, 426, 497, 722, 798, 994, 1083, 1349, 1491, 2166, 2527, 2698, 2982, 4047, 5054, 6859, 7581, 8094, 9443, 13718, 15162, 18886, 20577, 25631, 28329, 41154, 48013, 51262, 56658, 76893, 96026, 144039, 153786, 179417, 288078, 358834, 486989, 538251, 973978, 1076502, 1460967, 2921934, 3408923, 6817846, 10226769, 20453538]

約数ペア:

[(1, 20453538), (2, 10226769), (3, 6817846), (6, 3408923), (7, 2921934), (14, 1460967), (19, 1076502), (21, 973978), (38, 538251), (42, 486989), (57, 358834), (71, 288078), (114, 179417), (133, 153786), (142, 144039), (213, 96026), (266, 76893), (361, 56658), (399, 51262), (426, 48013), (497, 41154), (722, 28329), (798, 25631), (994, 20577), (1083, 18886), (1349, 15162), (1491, 13718), (2166, 9443), (2527, 8094), (2698, 7581), (2982, 6859), (4047, 5054)]