51791440

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{10613}}^1$

素因数の和:10687

約数の個数: 40

約数和(自身を含む): 122400648

約数和(自身を除く): 70609208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 10613, 21226, 42452, 53065, 84904, 106130, 169808, 212260, 424520, 647393, 849040, 1294786, 2589572, 3236965, 5179144, 6473930, 10358288, 12947860, 25895720, 51791440]

約数ペア:

[(1, 51791440), (2, 25895720), (4, 12947860), (5, 10358288), (8, 6473930), (10, 5179144), (16, 3236965), (20, 2589572), (40, 1294786), (61, 849040), (80, 647393), (122, 424520), (244, 212260), (305, 169808), (488, 106130), (610, 84904), (976, 53065), (1220, 42452), (2440, 21226), (4880, 10613)]