19404308

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{251}}^2$

素因数の和:524

約数の個数: 36

約数和(自身を含む): 42506016

約数和(自身を除く): 23101708

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 251, 308, 502, 1004, 1757, 2761, 3514, 5522, 7028, 11044, 19327, 38654, 63001, 77308, 126002, 252004, 441007, 693011, 882014, 1386022, 1764028, 2772044, 4851077, 9702154, 19404308]

約数ペア:

[(1, 19404308), (2, 9702154), (4, 4851077), (7, 2772044), (11, 1764028), (14, 1386022), (22, 882014), (28, 693011), (44, 441007), (77, 252004), (154, 126002), (251, 77308), (308, 63001), (502, 38654), (1004, 19327), (1757, 11044), (2761, 7028), (3514, 5522)]