21180708

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{653}}^1$

素因数の和:733

約数の個数: 72

約数和(自身を含む): 57847608

約数和(自身を除く): 36666900

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 53, 68, 102, 106, 153, 159, 204, 212, 306, 318, 477, 612, 636, 653, 901, 954, 1306, 1802, 1908, 1959, 2612, 2703, 3604, 3918, 5406, 5877, 7836, 8109, 10812, 11101, 11754, 16218, 22202, 23508, 32436, 33303, 34609, 44404, 66606, 69218, 99909, 103827, 133212, 138436, 199818, 207654, 311481, 399636, 415308, 588353, 622962, 1176706, 1245924, 1765059, 2353412, 3530118, 5295177, 7060236, 10590354, 21180708]

約数ペア:

[(1, 21180708), (2, 10590354), (3, 7060236), (4, 5295177), (6, 3530118), (9, 2353412), (12, 1765059), (17, 1245924), (18, 1176706), (34, 622962), (36, 588353), (51, 415308), (53, 399636), (68, 311481), (102, 207654), (106, 199818), (153, 138436), (159, 133212), (204, 103827), (212, 99909), (306, 69218), (318, 66606), (477, 44404), (612, 34609), (636, 33303), (653, 32436), (901, 23508), (954, 22202), (1306, 16218), (1802, 11754), (1908, 11101), (1959, 10812), (2612, 8109), (2703, 7836), (3604, 5877), (3918, 5406)]