20778430

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1481}}^1$

素因数の和:1572

約数の個数: 32

約数和(自身を含む): 39693888

約数和(自身を除く): 18915458

約数列:

[1, 2, 5, 10, 23, 46, 61, 115, 122, 230, 305, 610, 1403, 1481, 2806, 2962, 7015, 7405, 14030, 14810, 34063, 68126, 90341, 170315, 180682, 340630, 451705, 903410, 2077843, 4155686, 10389215, 20778430]

約数ペア:

[(1, 20778430), (2, 10389215), (5, 4155686), (10, 2077843), (23, 903410), (46, 451705), (61, 340630), (115, 180682), (122, 170315), (230, 90341), (305, 68126), (610, 34063), (1403, 14810), (1481, 14030), (2806, 7405), (2962, 7015)]