21016390

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:444

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 17863610

約数列:

[1, 2, 5, 10, 59, 118, 179, 199, 295, 358, 398, 590, 895, 995, 1790, 1990, 10561, 11741, 21122, 23482, 35621, 52805, 58705, 71242, 105610, 117410, 178105, 356210, 2101639, 4203278, 10508195, 21016390]

約数ペア:

[(1, 21016390), (2, 10508195), (5, 4203278), (10, 2101639), (59, 356210), (118, 178105), (179, 117410), (199, 105610), (295, 71242), (358, 58705), (398, 52805), (590, 35621), (895, 23482), (995, 21122), (1790, 11741), (1990, 10561)]