21709555

素因数分解:

$5^1\times 7^1\times {\mathrm{631}}^1\times {\mathrm{983}}^1$

素因数の和:1626

約数の個数: 16

約数和(自身を含む): 29850624

約数和(自身を除く): 8141069

約数列:

[1, 5, 7, 35, 631, 983, 3155, 4417, 4915, 6881, 22085, 34405, 620273, 3101365, 4341911, 21709555]

約数ペア:

[(1, 21709555), (5, 4341911), (7, 3101365), (35, 620273), (631, 34405), (983, 22085), (3155, 6881), (4417, 4915)]