21704930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{839}}^1$

素因数の和:1058

約数の個数: 32

約数和(自身を含む): 42336000

約数和(自身を除く): 20631070

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 839, 995, 1678, 1990, 2587, 4195, 5174, 8390, 10907, 12935, 21814, 25870, 54535, 109070, 166961, 333922, 834805, 1669610, 2170493, 4340986, 10852465, 21704930]

約数ペア:

[(1, 21704930), (2, 10852465), (5, 4340986), (10, 2170493), (13, 1669610), (26, 834805), (65, 333922), (130, 166961), (199, 109070), (398, 54535), (839, 25870), (995, 21814), (1678, 12935), (1990, 10907), (2587, 8390), (4195, 5174)]