51491720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1063}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 133297920

約数和(自身を除く): 81806200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 173, 280, 346, 692, 865, 1063, 1211, 1384, 1730, 2126, 2422, 3460, 4252, 4844, 5315, 6055, 6920, 7441, 8504, 9688, 10630, 12110, 14882, 21260, 24220, 29764, 37205, 42520, 48440, 59528, 74410, 148820, 183899, 297640, 367798, 735596, 919495, 1287293, 1471192, 1838990, 2574586, 3677980, 5149172, 6436465, 7355960, 10298344, 12872930, 25745860, 51491720]

約数ペア:

[(1, 51491720), (2, 25745860), (4, 12872930), (5, 10298344), (7, 7355960), (8, 6436465), (10, 5149172), (14, 3677980), (20, 2574586), (28, 1838990), (35, 1471192), (40, 1287293), (56, 919495), (70, 735596), (140, 367798), (173, 297640), (280, 183899), (346, 148820), (692, 74410), (865, 59528), (1063, 48440), (1211, 42520), (1384, 37205), (1730, 29764), (2126, 24220), (2422, 21260), (3460, 14882), (4252, 12110), (4844, 10630), (5315, 9688), (6055, 8504), (6920, 7441)]