21885710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:729

約数の個数: 64

約数和(自身を含む): 50333184

約数和(自身を除く): 28447474

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 43, 55, 70, 77, 86, 110, 154, 215, 301, 385, 430, 473, 602, 661, 770, 946, 1322, 1505, 2365, 3010, 3305, 3311, 4627, 4730, 6610, 6622, 7271, 9254, 14542, 16555, 23135, 28423, 33110, 36355, 46270, 50897, 56846, 72710, 101794, 142115, 198961, 254485, 284230, 312653, 397922, 508970, 625306, 994805, 1563265, 1989610, 2188571, 3126530, 4377142, 10942855, 21885710]

約数ペア:

[(1, 21885710), (2, 10942855), (5, 4377142), (7, 3126530), (10, 2188571), (11, 1989610), (14, 1563265), (22, 994805), (35, 625306), (43, 508970), (55, 397922), (70, 312653), (77, 284230), (86, 254485), (110, 198961), (154, 142115), (215, 101794), (301, 72710), (385, 56846), (430, 50897), (473, 46270), (602, 36355), (661, 33110), (770, 28423), (946, 23135), (1322, 16555), (1505, 14542), (2365, 9254), (3010, 7271), (3305, 6622), (3311, 6610), (4627, 4730)]