20997786

素因数分解:

$2^1\times 3^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{557}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 43175808

約数和(自身を除く): 22178022

約数列:

[1, 2, 3, 6, 61, 103, 122, 183, 206, 309, 366, 557, 618, 1114, 1671, 3342, 6283, 12566, 18849, 33977, 37698, 57371, 67954, 101931, 114742, 172113, 203862, 344226, 3499631, 6999262, 10498893, 20997786]

約数ペア:

[(1, 20997786), (2, 10498893), (3, 6999262), (6, 3499631), (61, 344226), (103, 203862), (122, 172113), (183, 114742), (206, 101931), (309, 67954), (366, 57371), (557, 37698), (618, 33977), (1114, 18849), (1671, 12566), (3342, 6283)]