221528139

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{541}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 379625472

約数和(自身を除く): 158097333

約数列:

[1, 3, 7, 17, 21, 31, 37, 51, 93, 111, 119, 217, 259, 357, 527, 541, 629, 651, 777, 1147, 1581, 1623, 1887, 3441, 3689, 3787, 4403, 8029, 9197, 11067, 11361, 13209, 16771, 19499, 20017, 24087, 27591, 50313, 58497, 60051, 64379, 117397, 136493, 140119, 193137, 285107, 340289, 352191, 409479, 420357, 620527, 855321, 1020867, 1861581, 1995749, 2382023, 4343689, 5987247, 7146069, 10548959, 13031067, 31646877, 73842713, 221528139]

約数ペア:

[(1, 221528139), (3, 73842713), (7, 31646877), (17, 13031067), (21, 10548959), (31, 7146069), (37, 5987247), (51, 4343689), (93, 2382023), (111, 1995749), (119, 1861581), (217, 1020867), (259, 855321), (357, 620527), (527, 420357), (541, 409479), (629, 352191), (651, 340289), (777, 285107), (1147, 193137), (1581, 140119), (1623, 136493), (1887, 117397), (3441, 64379), (3689, 60051), (3787, 58497), (4403, 50313), (8029, 27591), (9197, 24087), (11067, 20017), (11361, 19499), (13209, 16771)]