21108012

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2153}}^1$

素因数の和:2222

約数の個数: 48

約数和(自身を含む): 53074560

約数和(自身を除く): 31966548

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 43, 57, 76, 86, 114, 129, 172, 228, 258, 516, 817, 1634, 2153, 2451, 3268, 4306, 4902, 6459, 8612, 9804, 12918, 25836, 40907, 81814, 92579, 122721, 163628, 185158, 245442, 277737, 370316, 490884, 555474, 1110948, 1759001, 3518002, 5277003, 7036004, 10554006, 21108012]

約数ペア:

[(1, 21108012), (2, 10554006), (3, 7036004), (4, 5277003), (6, 3518002), (12, 1759001), (19, 1110948), (38, 555474), (43, 490884), (57, 370316), (76, 277737), (86, 245442), (114, 185158), (129, 163628), (172, 122721), (228, 92579), (258, 81814), (516, 40907), (817, 25836), (1634, 12918), (2153, 9804), (2451, 8612), (3268, 6459), (4306, 4902)]