18712113

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 29632512

約数和(自身を除く): 10920399

約数列:

[1, 3, 7, 21, 41, 103, 123, 211, 287, 309, 633, 721, 861, 1477, 2163, 4223, 4431, 8651, 12669, 21733, 25953, 29561, 60557, 65199, 88683, 152131, 181671, 456393, 891053, 2673159, 6237371, 18712113]

約数ペア:

[(1, 18712113), (3, 6237371), (7, 2673159), (21, 891053), (41, 456393), (103, 181671), (123, 152131), (211, 88683), (287, 65199), (309, 60557), (633, 29561), (721, 25953), (861, 21733), (1477, 12669), (2163, 8651), (4223, 4431)]