20118675

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 35354880

約数和(自身を除く): 15236205

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 107, 109, 115, 321, 327, 345, 535, 545, 575, 1605, 1635, 1725, 2461, 2507, 2675, 2725, 7383, 7521, 8025, 8175, 11663, 12305, 12535, 34989, 36915, 37605, 58315, 61525, 62675, 174945, 184575, 188025, 268249, 291575, 804747, 874725, 1341245, 4023735, 6706225, 20118675]

約数ペア:

[(1, 20118675), (3, 6706225), (5, 4023735), (15, 1341245), (23, 874725), (25, 804747), (69, 291575), (75, 268249), (107, 188025), (109, 184575), (115, 174945), (321, 62675), (327, 61525), (345, 58315), (535, 37605), (545, 36915), (575, 34989), (1605, 12535), (1635, 12305), (1725, 11663), (2461, 8175), (2507, 8025), (2675, 7521), (2725, 7383)]