21089988

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{25471}}^1$

素因数の和:25504

約数の個数: 36

約数和(自身を含む): 55630848

約数和(自身を除く): 34540860

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 207, 276, 414, 828, 25471, 50942, 76413, 101884, 152826, 229239, 305652, 458478, 585833, 916956, 1171666, 1757499, 2343332, 3514998, 5272497, 7029996, 10544994, 21089988]

約数ペア:

[(1, 21089988), (2, 10544994), (3, 7029996), (4, 5272497), (6, 3514998), (9, 2343332), (12, 1757499), (18, 1171666), (23, 916956), (36, 585833), (46, 458478), (69, 305652), (92, 229239), (138, 152826), (207, 101884), (276, 76413), (414, 50942), (828, 25471)]