20970272

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 42964992

約数和(自身を除く): 21994720

約数列:

[1, 2, 4, 8, 16, 32, 47, 73, 94, 146, 188, 191, 292, 376, 382, 584, 752, 764, 1168, 1504, 1528, 2336, 3056, 3431, 6112, 6862, 8977, 13724, 13943, 17954, 27448, 27886, 35908, 54896, 55772, 71816, 109792, 111544, 143632, 223088, 287264, 446176, 655321, 1310642, 2621284, 5242568, 10485136, 20970272]

約数ペア:

[(1, 20970272), (2, 10485136), (4, 5242568), (8, 2621284), (16, 1310642), (32, 655321), (47, 446176), (73, 287264), (94, 223088), (146, 143632), (188, 111544), (191, 109792), (292, 71816), (376, 55772), (382, 54896), (584, 35908), (752, 27886), (764, 27448), (1168, 17954), (1504, 13943), (1528, 13724), (2336, 8977), (3056, 6862), (3431, 6112)]