21813368

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{143509}}^1$

素因数の和:143534

約数の個数: 16

約数和(自身を含む): 43053000

約数和(自身を除く): 21239632

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 143509, 287018, 574036, 1148072, 2726671, 5453342, 10906684, 21813368]

約数ペア:

[(1, 21813368), (2, 10906684), (4, 5453342), (8, 2726671), (19, 1148072), (38, 574036), (76, 287018), (152, 143509)]