28064120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1373}}^1$

素因数の和:1464

約数の個数: 64

約数和(自身を含む): 73206720

約数和(自身を除く): 45142600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1373, 1460, 2044, 2555, 2746, 2920, 4088, 5110, 5492, 6865, 9611, 10220, 10984, 13730, 19222, 20440, 27460, 38444, 48055, 54920, 76888, 96110, 100229, 192220, 200458, 384440, 400916, 501145, 701603, 801832, 1002290, 1403206, 2004580, 2806412, 3508015, 4009160, 5612824, 7016030, 14032060, 28064120]

約数ペア:

[(1, 28064120), (2, 14032060), (4, 7016030), (5, 5612824), (7, 4009160), (8, 3508015), (10, 2806412), (14, 2004580), (20, 1403206), (28, 1002290), (35, 801832), (40, 701603), (56, 501145), (70, 400916), (73, 384440), (140, 200458), (146, 192220), (280, 100229), (292, 96110), (365, 76888), (511, 54920), (584, 48055), (730, 38444), (1022, 27460), (1373, 20440), (1460, 19222), (2044, 13730), (2555, 10984), (2746, 10220), (2920, 9611), (4088, 6865), (5110, 5492)]