19710390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1997}}^1$

素因数の和:2061

約数の個数: 64

約数和(自身を含む): 55240704

約数和(自身を除く): 35530314

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 47, 70, 94, 105, 141, 210, 235, 282, 329, 470, 658, 705, 987, 1410, 1645, 1974, 1997, 3290, 3994, 4935, 5991, 9870, 9985, 11982, 13979, 19970, 27958, 29955, 41937, 59910, 69895, 83874, 93859, 139790, 187718, 209685, 281577, 419370, 469295, 563154, 657013, 938590, 1314026, 1407885, 1971039, 2815770, 3285065, 3942078, 6570130, 9855195, 19710390]

約数ペア:

[(1, 19710390), (2, 9855195), (3, 6570130), (5, 3942078), (6, 3285065), (7, 2815770), (10, 1971039), (14, 1407885), (15, 1314026), (21, 938590), (30, 657013), (35, 563154), (42, 469295), (47, 419370), (70, 281577), (94, 209685), (105, 187718), (141, 139790), (210, 93859), (235, 83874), (282, 69895), (329, 59910), (470, 41937), (658, 29955), (705, 27958), (987, 19970), (1410, 13979), (1645, 11982), (1974, 9985), (1997, 9870), (3290, 5991), (3994, 4935)]