21047754

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{5507}}^1$

素因数の和:5539

約数の個数: 48

約数和(自身を含む): 52744608

約数和(自身を除く): 31696854

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 182, 273, 294, 546, 637, 1274, 1911, 3822, 5507, 11014, 16521, 33042, 38549, 71591, 77098, 115647, 143182, 214773, 231294, 269843, 429546, 501137, 539686, 809529, 1002274, 1503411, 1619058, 3006822, 3507959, 7015918, 10523877, 21047754]

約数ペア:

[(1, 21047754), (2, 10523877), (3, 7015918), (6, 3507959), (7, 3006822), (13, 1619058), (14, 1503411), (21, 1002274), (26, 809529), (39, 539686), (42, 501137), (49, 429546), (78, 269843), (91, 231294), (98, 214773), (147, 143182), (182, 115647), (273, 77098), (294, 71591), (546, 38549), (637, 33042), (1274, 16521), (1911, 11014), (3822, 5507)]