21044716

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 48033216

約数和(自身を除く): 26988500

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 43, 44, 49, 77, 86, 98, 154, 172, 196, 227, 301, 308, 454, 473, 539, 602, 908, 946, 1078, 1204, 1589, 1892, 2107, 2156, 2497, 3178, 3311, 4214, 4994, 6356, 6622, 8428, 9761, 9988, 11123, 13244, 17479, 19522, 22246, 23177, 34958, 39044, 44492, 46354, 68327, 69916, 92708, 107371, 122353, 136654, 214742, 244706, 273308, 429484, 478289, 489412, 751597, 956578, 1503194, 1913156, 3006388, 5261179, 10522358, 21044716]

約数ペア:

[(1, 21044716), (2, 10522358), (4, 5261179), (7, 3006388), (11, 1913156), (14, 1503194), (22, 956578), (28, 751597), (43, 489412), (44, 478289), (49, 429484), (77, 273308), (86, 244706), (98, 214742), (154, 136654), (172, 122353), (196, 107371), (227, 92708), (301, 69916), (308, 68327), (454, 46354), (473, 44492), (539, 39044), (602, 34958), (908, 23177), (946, 22246), (1078, 19522), (1204, 17479), (1589, 13244), (1892, 11123), (2107, 9988), (2156, 9761), (2497, 8428), (3178, 6622), (3311, 6356), (4214, 4994)]