21603988

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{40609}}^1$

素因数の和:40639

約数の個数: 24

約数和(自身を含む): 45483200

約数和(自身を除く): 23879212

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 40609, 81218, 162436, 284263, 568526, 771571, 1137052, 1543142, 3086284, 5400997, 10801994, 21603988]

約数ペア:

[(1, 21603988), (2, 10801994), (4, 5400997), (7, 3086284), (14, 1543142), (19, 1137052), (28, 771571), (38, 568526), (76, 284263), (133, 162436), (266, 81218), (532, 40609)]