21189348

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:353

約数の個数: 72

約数和(自身を含む): 56591808

約数和(自身を除く): 35402460

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 157, 163, 207, 276, 314, 326, 414, 471, 489, 628, 652, 828, 942, 978, 1413, 1467, 1884, 1956, 2826, 2934, 3611, 3749, 5652, 5868, 7222, 7498, 10833, 11247, 14444, 14996, 21666, 22494, 25591, 32499, 33741, 43332, 44988, 51182, 64998, 67482, 76773, 102364, 129996, 134964, 153546, 230319, 307092, 460638, 588593, 921276, 1177186, 1765779, 2354372, 3531558, 5297337, 7063116, 10594674, 21189348]

約数ペア:

[(1, 21189348), (2, 10594674), (3, 7063116), (4, 5297337), (6, 3531558), (9, 2354372), (12, 1765779), (18, 1177186), (23, 921276), (36, 588593), (46, 460638), (69, 307092), (92, 230319), (138, 153546), (157, 134964), (163, 129996), (207, 102364), (276, 76773), (314, 67482), (326, 64998), (414, 51182), (471, 44988), (489, 43332), (628, 33741), (652, 32499), (828, 25591), (942, 22494), (978, 21666), (1413, 14996), (1467, 14444), (1884, 11247), (1956, 10833), (2826, 7498), (2934, 7222), (3611, 5868), (3749, 5652)]