19180840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1123}}^1$

素因数の和:1202

約数の個数: 64

約数和(自身を含む): 50175360

約数和(自身を除く): 30994520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 854, 1123, 1220, 1708, 2135, 2246, 2440, 3416, 4270, 4492, 5615, 7861, 8540, 8984, 11230, 15722, 17080, 22460, 31444, 39305, 44920, 62888, 68503, 78610, 137006, 157220, 274012, 314440, 342515, 479521, 548024, 685030, 959042, 1370060, 1918084, 2397605, 2740120, 3836168, 4795210, 9590420, 19180840]

約数ペア:

[(1, 19180840), (2, 9590420), (4, 4795210), (5, 3836168), (7, 2740120), (8, 2397605), (10, 1918084), (14, 1370060), (20, 959042), (28, 685030), (35, 548024), (40, 479521), (56, 342515), (61, 314440), (70, 274012), (122, 157220), (140, 137006), (244, 78610), (280, 68503), (305, 62888), (427, 44920), (488, 39305), (610, 31444), (854, 22460), (1123, 17080), (1220, 15722), (1708, 11230), (2135, 8984), (2246, 8540), (2440, 7861), (3416, 5615), (4270, 4492)]