18941806

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 32126976

約数和(自身を除く): 13185170

約数列:

[1, 2, 13, 26, 31, 62, 71, 142, 331, 403, 662, 806, 923, 1846, 2201, 4303, 4402, 8606, 10261, 20522, 23501, 28613, 47002, 57226, 133393, 266786, 305513, 611026, 728531, 1457062, 9470903, 18941806]

約数ペア:

[(1, 18941806), (2, 9470903), (13, 1457062), (26, 728531), (31, 611026), (62, 305513), (71, 266786), (142, 133393), (331, 57226), (403, 47002), (662, 28613), (806, 23501), (923, 20522), (1846, 10261), (2201, 8606), (4303, 4402)]