20431480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16477}}^1$

素因数の和:16519

約数の個数: 32

約数和(自身を含む): 47456640

約数和(自身を除く): 27025160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16477, 32954, 65908, 82385, 131816, 164770, 329540, 510787, 659080, 1021574, 2043148, 2553935, 4086296, 5107870, 10215740, 20431480]

約数ペア:

[(1, 20431480), (2, 10215740), (4, 5107870), (5, 4086296), (8, 2553935), (10, 2043148), (20, 1021574), (31, 659080), (40, 510787), (62, 329540), (124, 164770), (155, 131816), (248, 82385), (310, 65908), (620, 32954), (1240, 16477)]