20381998

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2113}}^1$

素因数の和:2188

約数の個数: 32

約数和(自身を含む): 38356416

約数和(自身を除く): 17974418

約数列:

[1, 2, 7, 13, 14, 26, 53, 91, 106, 182, 371, 689, 742, 1378, 2113, 4226, 4823, 9646, 14791, 27469, 29582, 54938, 111989, 192283, 223978, 384566, 783923, 1455857, 1567846, 2911714, 10190999, 20381998]

約数ペア:

[(1, 20381998), (2, 10190999), (7, 2911714), (13, 1567846), (14, 1455857), (26, 783923), (53, 384566), (91, 223978), (106, 192283), (182, 111989), (371, 54938), (689, 29582), (742, 27469), (1378, 14791), (2113, 9646), (4226, 4823)]