20281360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1213}}^1$

素因数の和:1256

約数の個数: 80

約数和(自身を含む): 54192960

約数和(自身を除く): 33911600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1213, 1520, 1672, 2090, 2426, 3344, 4180, 4852, 6065, 8360, 9704, 12130, 13343, 16720, 19408, 23047, 24260, 26686, 46094, 48520, 53372, 66715, 92188, 97040, 106744, 115235, 133430, 184376, 213488, 230470, 253517, 266860, 368752, 460940, 507034, 533720, 921880, 1014068, 1067440, 1267585, 1843760, 2028136, 2535170, 4056272, 5070340, 10140680, 20281360]

約数ペア:

[(1, 20281360), (2, 10140680), (4, 5070340), (5, 4056272), (8, 2535170), (10, 2028136), (11, 1843760), (16, 1267585), (19, 1067440), (20, 1014068), (22, 921880), (38, 533720), (40, 507034), (44, 460940), (55, 368752), (76, 266860), (80, 253517), (88, 230470), (95, 213488), (110, 184376), (152, 133430), (176, 115235), (190, 106744), (209, 97040), (220, 92188), (304, 66715), (380, 53372), (418, 48520), (440, 46094), (760, 26686), (836, 24260), (880, 23047), (1045, 19408), (1213, 16720), (1520, 13343), (1672, 12130), (2090, 9704), (2426, 8360), (3344, 6065), (4180, 4852)]