51157421

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:226

約数の個数: 32

約数和(自身を含む): 63840000

約数和(自身を除く): 12682579

約数列:

[1, 7, 29, 37, 49, 139, 203, 259, 343, 973, 1073, 1421, 1813, 4031, 5143, 6811, 7511, 9947, 12691, 28217, 36001, 47677, 52577, 149147, 197519, 252007, 368039, 1044029, 1382633, 1764049, 7308203, 51157421]

約数ペア:

[(1, 51157421), (7, 7308203), (29, 1764049), (37, 1382633), (49, 1044029), (139, 368039), (203, 252007), (259, 197519), (343, 149147), (973, 52577), (1073, 47677), (1421, 36001), (1813, 28217), (4031, 12691), (5143, 9947), (6811, 7511)]