20619585

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{977}}^1$

素因数の和:1062

約数の個数: 48

約数和(自身を含む): 41498496

約数和(自身を除く): 20878911

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 67, 105, 201, 315, 335, 469, 603, 977, 1005, 1407, 2345, 2931, 3015, 4221, 4885, 6839, 7035, 8793, 14655, 20517, 21105, 34195, 43965, 61551, 65459, 102585, 196377, 307755, 327295, 458213, 589131, 981885, 1374639, 2291065, 2945655, 4123917, 6873195, 20619585]

約数ペア:

[(1, 20619585), (3, 6873195), (5, 4123917), (7, 2945655), (9, 2291065), (15, 1374639), (21, 981885), (35, 589131), (45, 458213), (63, 327295), (67, 307755), (105, 196377), (201, 102585), (315, 65459), (335, 61551), (469, 43965), (603, 34195), (977, 21105), (1005, 20517), (1407, 14655), (2345, 8793), (2931, 7035), (3015, 6839), (4221, 4885)]