201728980

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{28901}}^1$

素因数の和:29259

約数の個数: 24

約数和(自身を含む): 424859400

約数和(自身を除く): 223130420

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 6980, 28901, 57802, 115604, 144505, 289010, 578020, 10086449, 20172898, 40345796, 50432245, 100864490, 201728980]

約数ペア:

[(1, 201728980), (2, 100864490), (4, 50432245), (5, 40345796), (10, 20172898), (20, 10086449), (349, 578020), (698, 289010), (1396, 144505), (1745, 115604), (3490, 57802), (6980, 28901)]