21183664

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42709}}^1$

素因数の和:42748

約数の個数: 20

約数和(自身を含む): 42368320

約数和(自身を除く): 21184656

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42709, 85418, 170836, 341672, 683344, 1323979, 2647958, 5295916, 10591832, 21183664]

約数ペア:

[(1, 21183664), (2, 10591832), (4, 5295916), (8, 2647958), (16, 1323979), (31, 683344), (62, 341672), (124, 170836), (248, 85418), (496, 42709)]