18309920

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^2\times {\mathrm{317}}^1$

素因数の和:370

約数の個数: 72

約数和(自身を含む): 45797724

約数和(自身を除く): 27487804

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 317, 361, 380, 608, 634, 722, 760, 1268, 1444, 1520, 1585, 1805, 2536, 2888, 3040, 3170, 3610, 5072, 5776, 6023, 6340, 7220, 10144, 11552, 12046, 12680, 14440, 24092, 25360, 28880, 30115, 48184, 50720, 57760, 60230, 96368, 114437, 120460, 192736, 228874, 240920, 457748, 481840, 572185, 915496, 963680, 1144370, 1830992, 2288740, 3661984, 4577480, 9154960, 18309920]

約数ペア:

[(1, 18309920), (2, 9154960), (4, 4577480), (5, 3661984), (8, 2288740), (10, 1830992), (16, 1144370), (19, 963680), (20, 915496), (32, 572185), (38, 481840), (40, 457748), (76, 240920), (80, 228874), (95, 192736), (152, 120460), (160, 114437), (190, 96368), (304, 60230), (317, 57760), (361, 50720), (380, 48184), (608, 30115), (634, 28880), (722, 25360), (760, 24092), (1268, 14440), (1444, 12680), (1520, 12046), (1585, 11552), (1805, 10144), (2536, 7220), (2888, 6340), (3040, 6023), (3170, 5776), (3610, 5072)]