21000962896

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{304609}}^1$

素因数の和:304787

約数の個数: 40

約数和(自身を含む): 42304236800

約数和(自身を除く): 21303273904

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 139, 248, 278, 496, 556, 1112, 2224, 4309, 8618, 17236, 34472, 68944, 304609, 609218, 1218436, 2436872, 4873744, 9442879, 18885758, 37771516, 42340651, 75543032, 84681302, 151086064, 169362604, 338725208, 677450416, 1312560181, 2625120362, 5250240724, 10500481448, 21000962896]

約数ペア:

[(1, 21000962896), (2, 10500481448), (4, 5250240724), (8, 2625120362), (16, 1312560181), (31, 677450416), (62, 338725208), (124, 169362604), (139, 151086064), (248, 84681302), (278, 75543032), (496, 42340651), (556, 37771516), (1112, 18885758), (2224, 9442879), (4309, 4873744), (8618, 2436872), (17236, 1218436), (34472, 609218), (68944, 304609)]