128212511

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{21523}}^1$

素因数の和:21590

約数の個数: 16

約数和(自身を含む): 157039104

約数和(自身を除く): 28826593

約数列:

[1, 7, 23, 37, 161, 259, 851, 5957, 21523, 150661, 495029, 796351, 3465203, 5574457, 18316073, 128212511]

約数ペア:

[(1, 128212511), (7, 18316073), (23, 5574457), (37, 3465203), (161, 796351), (259, 495029), (851, 150661), (5957, 21523)]