19880176

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:457

約数の個数: 40

約数和(自身を含む): 40176000

約数和(自身を除く): 20295824

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 149, 248, 269, 298, 496, 538, 596, 1076, 1192, 2152, 2384, 4304, 4619, 8339, 9238, 16678, 18476, 33356, 36952, 40081, 66712, 73904, 80162, 133424, 160324, 320648, 641296, 1242511, 2485022, 4970044, 9940088, 19880176]

約数ペア:

[(1, 19880176), (2, 9940088), (4, 4970044), (8, 2485022), (16, 1242511), (31, 641296), (62, 320648), (124, 160324), (149, 133424), (248, 80162), (269, 73904), (298, 66712), (496, 40081), (538, 36952), (596, 33356), (1076, 18476), (1192, 16678), (2152, 9238), (2384, 8339), (4304, 4619)]