21357691888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{532027}}^1$

素因数の和:532241

約数の個数: 40

約数和(自身を含む): 44794629488

約数和(自身を除く): 23436937600

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 193, 208, 386, 772, 1544, 2509, 3088, 5018, 10036, 20072, 40144, 532027, 1064054, 2128108, 4256216, 6916351, 8512432, 13832702, 27665404, 55330808, 102681211, 110661616, 205362422, 410724844, 821449688, 1334855743, 1642899376, 2669711486, 5339422972, 10678845944, 21357691888]

約数ペア:

[(1, 21357691888), (2, 10678845944), (4, 5339422972), (8, 2669711486), (13, 1642899376), (16, 1334855743), (26, 821449688), (52, 410724844), (104, 205362422), (193, 110661616), (208, 102681211), (386, 55330808), (772, 27665404), (1544, 13832702), (2509, 8512432), (3088, 6916351), (5018, 4256216), (10036, 2128108), (20072, 1064054), (40144, 532027)]