20304428

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{1217}}^1$

素因数の和:1361

約数の個数: 24

約数和(自身を含む): 36764112

約数和(自身を除く): 16459684

約数列:

[1, 2, 4, 43, 86, 97, 172, 194, 388, 1217, 2434, 4171, 4868, 8342, 16684, 52331, 104662, 118049, 209324, 236098, 472196, 5076107, 10152214, 20304428]

約数ペア:

[(1, 20304428), (2, 10152214), (4, 5076107), (43, 472196), (86, 236098), (97, 209324), (172, 118049), (194, 104662), (388, 52331), (1217, 16684), (2434, 8342), (4171, 4868)]