51457520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20749}}^1$

素因数の和:20793

約数の個数: 40

約数和(自身を含む): 123504000

約数和(自身を除く): 72046480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 20749, 41498, 82996, 103745, 165992, 207490, 331984, 414980, 643219, 829960, 1286438, 1659920, 2572876, 3216095, 5145752, 6432190, 10291504, 12864380, 25728760, 51457520]

約数ペア:

[(1, 51457520), (2, 25728760), (4, 12864380), (5, 10291504), (8, 6432190), (10, 5145752), (16, 3216095), (20, 2572876), (31, 1659920), (40, 1286438), (62, 829960), (80, 643219), (124, 414980), (155, 331984), (248, 207490), (310, 165992), (496, 103745), (620, 82996), (1240, 41498), (2480, 20749)]