21251210

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 39312000

約数和(自身を除く): 18060790

約数列:

[1, 2, 5, 10, 59, 118, 181, 199, 295, 362, 398, 590, 905, 995, 1810, 1990, 10679, 11741, 21358, 23482, 36019, 53395, 58705, 72038, 106790, 117410, 180095, 360190, 2125121, 4250242, 10625605, 21251210]

約数ペア:

[(1, 21251210), (2, 10625605), (5, 4250242), (10, 2125121), (59, 360190), (118, 180095), (181, 117410), (199, 106790), (295, 72038), (362, 58705), (398, 53395), (590, 36019), (905, 23482), (995, 21358), (1810, 11741), (1990, 10679)]