19909988

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{10613}}^1$

素因数の和:10691

約数の個数: 24

約数和(自身を含む): 40418112

約数和(自身を除く): 20508124

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 268, 469, 938, 1876, 10613, 21226, 42452, 74291, 148582, 297164, 711071, 1422142, 2844284, 4977497, 9954994, 19909988]

約数ペア:

[(1, 19909988), (2, 9954994), (4, 4977497), (7, 2844284), (14, 1422142), (28, 711071), (67, 297164), (134, 148582), (268, 74291), (469, 42452), (938, 21226), (1876, 10613)]