20789928

素因数分解:

$2^3\times 3^2\times {\mathrm{199}}^1\times {\mathrm{1451}}^1$

素因数の和:1662

約数の個数: 48

約数和(自身を含む): 56628000

約数和(自身を除く): 35838072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 199, 398, 597, 796, 1194, 1451, 1592, 1791, 2388, 2902, 3582, 4353, 4776, 5804, 7164, 8706, 11608, 13059, 14328, 17412, 26118, 34824, 52236, 104472, 288749, 577498, 866247, 1154996, 1732494, 2309992, 2598741, 3464988, 5197482, 6929976, 10394964, 20789928]

約数ペア:

[(1, 20789928), (2, 10394964), (3, 6929976), (4, 5197482), (6, 3464988), (8, 2598741), (9, 2309992), (12, 1732494), (18, 1154996), (24, 866247), (36, 577498), (72, 288749), (199, 104472), (398, 52236), (597, 34824), (796, 26118), (1194, 17412), (1451, 14328), (1592, 13059), (1791, 11608), (2388, 8706), (2902, 7164), (3582, 5804), (4353, 4776)]