21529310

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:461

約数の個数: 64

約数和(自身を含む): 46422720

約数和(自身を除く): 24893410

約数列:

[1, 2, 5, 10, 11, 17, 22, 29, 34, 55, 58, 85, 110, 145, 170, 187, 290, 319, 374, 397, 493, 638, 794, 935, 986, 1595, 1870, 1985, 2465, 3190, 3970, 4367, 4930, 5423, 6749, 8734, 10846, 11513, 13498, 21835, 23026, 27115, 33745, 43670, 54230, 57565, 67490, 74239, 115130, 126643, 148478, 195721, 253286, 371195, 391442, 633215, 742390, 978605, 1266430, 1957210, 2152931, 4305862, 10764655, 21529310]

約数ペア:

[(1, 21529310), (2, 10764655), (5, 4305862), (10, 2152931), (11, 1957210), (17, 1266430), (22, 978605), (29, 742390), (34, 633215), (55, 391442), (58, 371195), (85, 253286), (110, 195721), (145, 148478), (170, 126643), (187, 115130), (290, 74239), (319, 67490), (374, 57565), (397, 54230), (493, 43670), (638, 33745), (794, 27115), (935, 23026), (986, 21835), (1595, 13498), (1870, 11513), (1985, 10846), (2465, 8734), (3190, 6749), (3970, 5423), (4367, 4930)]