20245575

素因数分解:

$3^1\times 5^2\times 7^3\times {\mathrm{787}}^1$

素因数の和:821

約数の個数: 48

約数和(自身を含む): 39084800

約数和(自身を除く): 18839225

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 343, 525, 735, 787, 1029, 1225, 1715, 2361, 3675, 3935, 5145, 5509, 8575, 11805, 16527, 19675, 25725, 27545, 38563, 59025, 82635, 115689, 137725, 192815, 269941, 413175, 578445, 809823, 964075, 1349705, 2892225, 4049115, 6748525, 20245575]

約数ペア:

[(1, 20245575), (3, 6748525), (5, 4049115), (7, 2892225), (15, 1349705), (21, 964075), (25, 809823), (35, 578445), (49, 413175), (75, 269941), (105, 192815), (147, 137725), (175, 115689), (245, 82635), (343, 59025), (525, 38563), (735, 27545), (787, 25725), (1029, 19675), (1225, 16527), (1715, 11805), (2361, 8575), (3675, 5509), (3935, 5145)]