20560904

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{463}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 48330240

約数和(自身を除く): 27769336

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 61, 91, 104, 122, 182, 244, 364, 427, 463, 488, 728, 793, 854, 926, 1586, 1708, 1852, 3172, 3241, 3416, 3704, 5551, 6019, 6344, 6482, 11102, 12038, 12964, 22204, 24076, 25928, 28243, 42133, 44408, 48152, 56486, 84266, 112972, 168532, 197701, 225944, 337064, 367159, 395402, 734318, 790804, 1468636, 1581608, 2570113, 2937272, 5140226, 10280452, 20560904]

約数ペア:

[(1, 20560904), (2, 10280452), (4, 5140226), (7, 2937272), (8, 2570113), (13, 1581608), (14, 1468636), (26, 790804), (28, 734318), (52, 395402), (56, 367159), (61, 337064), (91, 225944), (104, 197701), (122, 168532), (182, 112972), (244, 84266), (364, 56486), (427, 48152), (463, 44408), (488, 42133), (728, 28243), (793, 25928), (854, 24076), (926, 22204), (1586, 12964), (1708, 12038), (1852, 11102), (3172, 6482), (3241, 6344), (3416, 6019), (3704, 5551)]