18904528

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1093}}^1$

素因数の和:1171

約数の個数: 40

約数和(自身を含む): 39068928

約数和(自身を除く): 20164400

約数列:

[1, 2, 4, 8, 16, 23, 46, 47, 92, 94, 184, 188, 368, 376, 752, 1081, 1093, 2162, 2186, 4324, 4372, 8648, 8744, 17296, 17488, 25139, 50278, 51371, 100556, 102742, 201112, 205484, 402224, 410968, 821936, 1181533, 2363066, 4726132, 9452264, 18904528]

約数ペア:

[(1, 18904528), (2, 9452264), (4, 4726132), (8, 2363066), (16, 1181533), (23, 821936), (46, 410968), (47, 402224), (92, 205484), (94, 201112), (184, 102742), (188, 100556), (368, 51371), (376, 50278), (752, 25139), (1081, 17488), (1093, 17296), (2162, 8744), (2186, 8648), (4324, 4372)]