20394885

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10223}}^1$

素因数の和:10257

約数の個数: 32

約数和(自身を含む): 39260160

約数和(自身を除く): 18865275

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10223, 30669, 51115, 71561, 153345, 194237, 214683, 357805, 582711, 971185, 1073415, 1359659, 2913555, 4078977, 6798295, 20394885]

約数ペア:

[(1, 20394885), (3, 6798295), (5, 4078977), (7, 2913555), (15, 1359659), (19, 1073415), (21, 971185), (35, 582711), (57, 357805), (95, 214683), (105, 194237), (133, 153345), (285, 71561), (399, 51115), (665, 30669), (1995, 10223)]