21000500390

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{48838373}}^1$

素因数の和:48838423

約数の個数: 16

約数和(自身を含む): 38679992208

約数和(自身を除く): 17679491818

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 48838373, 97676746, 244191865, 488383730, 2100050039, 4200100078, 10500250195, 21000500390]

約数ペア:

[(1, 21000500390), (2, 10500250195), (5, 4200100078), (10, 2100050039), (43, 488383730), (86, 244191865), (215, 97676746), (430, 48838373)]