163986280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{132247}}^1$

素因数の和:132289

約数の個数: 32

約数和(自身を含む): 380874240

約数和(自身を除く): 216887960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 132247, 264494, 528988, 661235, 1057976, 1322470, 2644940, 4099657, 5289880, 8199314, 16398628, 20498285, 32797256, 40996570, 81993140, 163986280]

約数ペア:

[(1, 163986280), (2, 81993140), (4, 40996570), (5, 32797256), (8, 20498285), (10, 16398628), (20, 8199314), (31, 5289880), (40, 4099657), (62, 2644940), (124, 1322470), (155, 1057976), (248, 661235), (310, 528988), (620, 264494), (1240, 132247)]