21020376

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{757}}^1$

素因数の和:868

約数の個数: 64

約数和(自身を含む): 57304800

約数和(自身を除く): 36284424

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 89, 104, 156, 178, 267, 312, 356, 534, 712, 757, 1068, 1157, 1514, 2136, 2271, 2314, 3028, 3471, 4542, 4628, 6056, 6942, 9084, 9256, 9841, 13884, 18168, 19682, 27768, 29523, 39364, 59046, 67373, 78728, 118092, 134746, 202119, 236184, 269492, 404238, 538984, 808476, 875849, 1616952, 1751698, 2627547, 3503396, 5255094, 7006792, 10510188, 21020376]

約数ペア:

[(1, 21020376), (2, 10510188), (3, 7006792), (4, 5255094), (6, 3503396), (8, 2627547), (12, 1751698), (13, 1616952), (24, 875849), (26, 808476), (39, 538984), (52, 404238), (78, 269492), (89, 236184), (104, 202119), (156, 134746), (178, 118092), (267, 78728), (312, 67373), (356, 59046), (534, 39364), (712, 29523), (757, 27768), (1068, 19682), (1157, 18168), (1514, 13884), (2136, 9841), (2271, 9256), (2314, 9084), (3028, 6942), (3471, 6056), (4542, 4628)]