21622020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51481}}^1$

素因数の和:51500

約数の個数: 48

約数和(自身を含む): 69191808

約数和(自身を除く): 47569788

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51481, 102962, 154443, 205924, 257405, 308886, 360367, 514810, 617772, 720734, 772215, 1029620, 1081101, 1441468, 1544430, 1801835, 2162202, 3088860, 3603670, 4324404, 5405505, 7207340, 10811010, 21622020]

約数ペア:

[(1, 21622020), (2, 10811010), (3, 7207340), (4, 5405505), (5, 4324404), (6, 3603670), (7, 3088860), (10, 2162202), (12, 1801835), (14, 1544430), (15, 1441468), (20, 1081101), (21, 1029620), (28, 772215), (30, 720734), (35, 617772), (42, 514810), (60, 360367), (70, 308886), (84, 257405), (105, 205924), (140, 154443), (210, 102962), (420, 51481)]