21566776

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 50964480

約数和(自身を除く): 29397704

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 157, 223, 308, 314, 446, 616, 628, 892, 1099, 1256, 1561, 1727, 1784, 2198, 2453, 3122, 3454, 4396, 4906, 6244, 6908, 8792, 9812, 12089, 12488, 13816, 17171, 19624, 24178, 34342, 35011, 48356, 68684, 70022, 96712, 137368, 140044, 245077, 280088, 385121, 490154, 770242, 980308, 1540484, 1960616, 2695847, 3080968, 5391694, 10783388, 21566776]

約数ペア:

[(1, 21566776), (2, 10783388), (4, 5391694), (7, 3080968), (8, 2695847), (11, 1960616), (14, 1540484), (22, 980308), (28, 770242), (44, 490154), (56, 385121), (77, 280088), (88, 245077), (154, 140044), (157, 137368), (223, 96712), (308, 70022), (314, 68684), (446, 48356), (616, 35011), (628, 34342), (892, 24178), (1099, 19624), (1256, 17171), (1561, 13816), (1727, 12488), (1784, 12089), (2198, 9812), (2453, 8792), (3122, 6908), (3454, 6244), (4396, 4906)]