20864358

素因数分解:

$2^1\times 3^3\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 49144320

約数和(自身を除く): 28279962

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 107, 138, 157, 207, 214, 314, 321, 414, 471, 621, 642, 942, 963, 1242, 1413, 1926, 2461, 2826, 2889, 3611, 4239, 4922, 5778, 7222, 7383, 8478, 10833, 14766, 16799, 21666, 22149, 32499, 33598, 44298, 50397, 64998, 66447, 97497, 100794, 132894, 151191, 194994, 302382, 386377, 453573, 772754, 907146, 1159131, 2318262, 3477393, 6954786, 10432179, 20864358]

約数ペア:

[(1, 20864358), (2, 10432179), (3, 6954786), (6, 3477393), (9, 2318262), (18, 1159131), (23, 907146), (27, 772754), (46, 453573), (54, 386377), (69, 302382), (107, 194994), (138, 151191), (157, 132894), (207, 100794), (214, 97497), (314, 66447), (321, 64998), (414, 50397), (471, 44298), (621, 33598), (642, 32499), (942, 22149), (963, 21666), (1242, 16799), (1413, 14766), (1926, 10833), (2461, 8478), (2826, 7383), (2889, 7222), (3611, 5778), (4239, 4922)]