21121744

素因数分解:

$2^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{929}}^1$

素因数の和:980

約数の個数: 60

約数和(自身を含む): 49299300

約数和(自身を除く): 28177556

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 49, 56, 58, 98, 112, 116, 196, 203, 232, 392, 406, 464, 784, 812, 929, 1421, 1624, 1858, 2842, 3248, 3716, 5684, 6503, 7432, 11368, 13006, 14864, 22736, 26012, 26941, 45521, 52024, 53882, 91042, 104048, 107764, 182084, 188587, 215528, 364168, 377174, 431056, 728336, 754348, 1320109, 1508696, 2640218, 3017392, 5280436, 10560872, 21121744]

約数ペア:

[(1, 21121744), (2, 10560872), (4, 5280436), (7, 3017392), (8, 2640218), (14, 1508696), (16, 1320109), (28, 754348), (29, 728336), (49, 431056), (56, 377174), (58, 364168), (98, 215528), (112, 188587), (116, 182084), (196, 107764), (203, 104048), (232, 91042), (392, 53882), (406, 52024), (464, 45521), (784, 26941), (812, 26012), (929, 22736), (1421, 14864), (1624, 13006), (1858, 11368), (2842, 7432), (3248, 6503), (3716, 5684)]