21004970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2971}}^1$

素因数の和:3086

約数の個数: 32

約数和(自身を含む): 43652736

約数和(自身を除く): 22647766

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 101, 202, 505, 707, 1010, 1414, 2971, 3535, 5942, 7070, 14855, 20797, 29710, 41594, 103985, 207970, 300071, 600142, 1500355, 2100497, 3000710, 4200994, 10502485, 21004970]

約数ペア:

[(1, 21004970), (2, 10502485), (5, 4200994), (7, 3000710), (10, 2100497), (14, 1500355), (35, 600142), (70, 300071), (101, 207970), (202, 103985), (505, 41594), (707, 29710), (1010, 20797), (1414, 14855), (2971, 7070), (3535, 5942)]