1289862385

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{4001}}^1$

素因数の和:4225

約数の個数: 32

約数和(自身を含む): 1810312704

約数和(自身を除く): 520450319

約数列:

[1, 5, 7, 35, 61, 151, 305, 427, 755, 1057, 2135, 4001, 5285, 9211, 20005, 28007, 46055, 64477, 140035, 244061, 322385, 604151, 1220305, 1708427, 3020755, 4229057, 8542135, 21145285, 36853211, 184266055, 257972477, 1289862385]

約数ペア:

[(1, 1289862385), (5, 257972477), (7, 184266055), (35, 36853211), (61, 21145285), (151, 8542135), (305, 4229057), (427, 3020755), (755, 1708427), (1057, 1220305), (2135, 604151), (4001, 322385), (5285, 244061), (9211, 140035), (20005, 64477), (28007, 46055)]