201997240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{162901}}^1$

素因数の和:162943

約数の個数: 32

約数和(自身を含む): 469157760

約数和(自身を除く): 267160520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 162901, 325802, 651604, 814505, 1303208, 1629010, 3258020, 5049931, 6516040, 10099862, 20199724, 25249655, 40399448, 50499310, 100998620, 201997240]

約数ペア:

[(1, 201997240), (2, 100998620), (4, 50499310), (5, 40399448), (8, 25249655), (10, 20199724), (20, 10099862), (31, 6516040), (40, 5049931), (62, 3258020), (124, 1629010), (155, 1303208), (248, 814505), (310, 651604), (620, 325802), (1240, 162901)]