217449520

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{20749}}^1$

素因数の和:20893

約数の個数: 40

約数和(自身を含む): 509454000

約数和(自身を除く): 292004480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 5240, 10480, 20749, 41498, 82996, 103745, 165992, 207490, 331984, 414980, 829960, 1659920, 2718119, 5436238, 10872476, 13590595, 21744952, 27181190, 43489904, 54362380, 108724760, 217449520]

約数ペア:

[(1, 217449520), (2, 108724760), (4, 54362380), (5, 43489904), (8, 27181190), (10, 21744952), (16, 13590595), (20, 10872476), (40, 5436238), (80, 2718119), (131, 1659920), (262, 829960), (524, 414980), (655, 331984), (1048, 207490), (1310, 165992), (2096, 103745), (2620, 82996), (5240, 41498), (10480, 20749)]