21426440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1297}}^1$

素因数の和:1374

約数の個数: 64

約数和(自身を含む): 56073600

約数和(自身を除く): 34647160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 59, 70, 118, 140, 236, 280, 295, 413, 472, 590, 826, 1180, 1297, 1652, 2065, 2360, 2594, 3304, 4130, 5188, 6485, 8260, 9079, 10376, 12970, 16520, 18158, 25940, 36316, 45395, 51880, 72632, 76523, 90790, 153046, 181580, 306092, 363160, 382615, 535661, 612184, 765230, 1071322, 1530460, 2142644, 2678305, 3060920, 4285288, 5356610, 10713220, 21426440]

約数ペア:

[(1, 21426440), (2, 10713220), (4, 5356610), (5, 4285288), (7, 3060920), (8, 2678305), (10, 2142644), (14, 1530460), (20, 1071322), (28, 765230), (35, 612184), (40, 535661), (56, 382615), (59, 363160), (70, 306092), (118, 181580), (140, 153046), (236, 90790), (280, 76523), (295, 72632), (413, 51880), (472, 45395), (590, 36316), (826, 25940), (1180, 18158), (1297, 16520), (1652, 12970), (2065, 10376), (2360, 9079), (2594, 8260), (3304, 6485), (4130, 5188)]