21757080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{7883}}^1$

素因数の和:7920

約数の個数: 64

約数和(自身を含む): 68117760

約数和(自身を除く): 46360680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 460, 552, 690, 920, 1380, 2760, 7883, 15766, 23649, 31532, 39415, 47298, 63064, 78830, 94596, 118245, 157660, 181309, 189192, 236490, 315320, 362618, 472980, 543927, 725236, 906545, 945960, 1087854, 1450472, 1813090, 2175708, 2719635, 3626180, 4351416, 5439270, 7252360, 10878540, 21757080]

約数ペア:

[(1, 21757080), (2, 10878540), (3, 7252360), (4, 5439270), (5, 4351416), (6, 3626180), (8, 2719635), (10, 2175708), (12, 1813090), (15, 1450472), (20, 1087854), (23, 945960), (24, 906545), (30, 725236), (40, 543927), (46, 472980), (60, 362618), (69, 315320), (92, 236490), (115, 189192), (120, 181309), (138, 157660), (184, 118245), (230, 94596), (276, 78830), (345, 63064), (460, 47298), (552, 39415), (690, 31532), (920, 23649), (1380, 15766), (2760, 7883)]