19432720

素因数分解:

$2^4\times 5^1\times {\mathrm{449}}^1\times {\mathrm{541}}^1$

素因数の和:1003

約数の個数: 40

約数和(自身を含む): 45365400

約数和(自身を除く): 25932680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 449, 541, 898, 1082, 1796, 2164, 2245, 2705, 3592, 4328, 4490, 5410, 7184, 8656, 8980, 10820, 17960, 21640, 35920, 43280, 242909, 485818, 971636, 1214545, 1943272, 2429090, 3886544, 4858180, 9716360, 19432720]

約数ペア:

[(1, 19432720), (2, 9716360), (4, 4858180), (5, 3886544), (8, 2429090), (10, 1943272), (16, 1214545), (20, 971636), (40, 485818), (80, 242909), (449, 43280), (541, 35920), (898, 21640), (1082, 17960), (1796, 10820), (2164, 8980), (2245, 8656), (2705, 7184), (3592, 5410), (4328, 4490)]