21868424

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{421}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 42335040

約数和(自身を除く): 20466616

約数列:

[1, 2, 4, 8, 43, 86, 151, 172, 302, 344, 421, 604, 842, 1208, 1684, 3368, 6493, 12986, 18103, 25972, 36206, 51944, 63571, 72412, 127142, 144824, 254284, 508568, 2733553, 5467106, 10934212, 21868424]

約数ペア:

[(1, 21868424), (2, 10934212), (4, 5467106), (8, 2733553), (43, 508568), (86, 254284), (151, 144824), (172, 127142), (302, 72412), (344, 63571), (421, 51944), (604, 36206), (842, 25972), (1208, 18103), (1684, 12986), (3368, 6493)]