21779210

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128113}}^1$

素因数の和:128137

約数の個数: 16

約数和(自身を含む): 41508936

約数和(自身を除く): 19729726

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128113, 256226, 640565, 1281130, 2177921, 4355842, 10889605, 21779210]

約数ペア:

[(1, 21779210), (2, 10889605), (5, 4355842), (10, 2177921), (17, 1281130), (34, 640565), (85, 256226), (170, 128113)]