420888980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{105751}}^1$

素因数の和:105959

約数の個数: 24

約数和(自身を含む): 888316800

約数和(自身を除く): 467427820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 105751, 211502, 423004, 528755, 1057510, 2115020, 21044449, 42088898, 84177796, 105222245, 210444490, 420888980]

約数ペア:

[(1, 420888980), (2, 210444490), (4, 105222245), (5, 84177796), (10, 42088898), (20, 21044449), (199, 2115020), (398, 1057510), (796, 528755), (995, 423004), (1990, 211502), (3980, 105751)]