21037772

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{229}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 44976960

約数和(自身を除く): 23939188

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 193, 229, 238, 386, 458, 476, 772, 916, 1351, 1603, 2702, 3206, 3281, 3893, 5404, 6412, 6562, 7786, 13124, 15572, 22967, 27251, 44197, 45934, 54502, 88394, 91868, 109004, 176788, 309379, 618758, 751349, 1237516, 1502698, 3005396, 5259443, 10518886, 21037772]

約数ペア:

[(1, 21037772), (2, 10518886), (4, 5259443), (7, 3005396), (14, 1502698), (17, 1237516), (28, 751349), (34, 618758), (68, 309379), (119, 176788), (193, 109004), (229, 91868), (238, 88394), (386, 54502), (458, 45934), (476, 44197), (772, 27251), (916, 22967), (1351, 15572), (1603, 13124), (2702, 7786), (3206, 6562), (3281, 6412), (3893, 5404)]