20654805

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{137}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 36630720

約数和(自身を除く): 15975915

約数列:

[1, 3, 5, 15, 19, 23, 57, 69, 95, 115, 137, 285, 345, 411, 437, 529, 685, 1311, 1587, 2055, 2185, 2603, 2645, 3151, 6555, 7809, 7935, 9453, 10051, 13015, 15755, 30153, 39045, 47265, 50255, 59869, 72473, 150765, 179607, 217419, 299345, 362365, 898035, 1087095, 1376987, 4130961, 6884935, 20654805]

約数ペア:

[(1, 20654805), (3, 6884935), (5, 4130961), (15, 1376987), (19, 1087095), (23, 898035), (57, 362365), (69, 299345), (95, 217419), (115, 179607), (137, 150765), (285, 72473), (345, 59869), (411, 50255), (437, 47265), (529, 39045), (685, 30153), (1311, 15755), (1587, 13015), (2055, 10051), (2185, 9453), (2603, 7935), (2645, 7809), (3151, 6555)]