1290074828

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{648931}}^1$

素因数の和:649013

約数の個数: 24

約数和(自身を含む): 2616493824

約数和(自身を除く): 1326418996

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 648931, 1297862, 2595724, 4542517, 9085034, 18170068, 46074101, 92148202, 184296404, 322518707, 645037414, 1290074828]

約数ペア:

[(1, 1290074828), (2, 645037414), (4, 322518707), (7, 184296404), (14, 92148202), (28, 46074101), (71, 18170068), (142, 9085034), (284, 4542517), (497, 2595724), (994, 1297862), (1988, 648931)]