21431504

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 42854400

約数和(自身を除く): 21422896

約数列:

[1, 2, 4, 8, 16, 53, 106, 127, 199, 212, 254, 398, 424, 508, 796, 848, 1016, 1592, 2032, 3184, 6731, 10547, 13462, 21094, 25273, 26924, 42188, 50546, 53848, 84376, 101092, 107696, 168752, 202184, 404368, 1339469, 2678938, 5357876, 10715752, 21431504]

約数ペア:

[(1, 21431504), (2, 10715752), (4, 5357876), (8, 2678938), (16, 1339469), (53, 404368), (106, 202184), (127, 168752), (199, 107696), (212, 101092), (254, 84376), (398, 53848), (424, 50546), (508, 42188), (796, 26924), (848, 25273), (1016, 21094), (1592, 13462), (2032, 10547), (3184, 6731)]