20187765560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1\times {\mathrm{28697}}^1$

素因数の和:29160

約数の個数: 64

約数和(自身を含む): 46594072800

約数和(自身を除く): 26406307240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 409, 430, 818, 860, 1636, 1720, 2045, 3272, 4090, 8180, 16360, 17587, 28697, 35174, 57394, 70348, 87935, 114788, 140696, 143485, 175870, 229576, 286970, 351740, 573940, 703480, 1147880, 1233971, 2467942, 4935884, 6169855, 9871768, 11737073, 12339710, 23474146, 24679420, 46948292, 49358840, 58685365, 93896584, 117370730, 234741460, 469482920, 504694139, 1009388278, 2018776556, 2523470695, 4037553112, 5046941390, 10093882780, 20187765560]

約数ペア:

[(1, 20187765560), (2, 10093882780), (4, 5046941390), (5, 4037553112), (8, 2523470695), (10, 2018776556), (20, 1009388278), (40, 504694139), (43, 469482920), (86, 234741460), (172, 117370730), (215, 93896584), (344, 58685365), (409, 49358840), (430, 46948292), (818, 24679420), (860, 23474146), (1636, 12339710), (1720, 11737073), (2045, 9871768), (3272, 6169855), (4090, 4935884), (8180, 2467942), (16360, 1233971), (17587, 1147880), (28697, 703480), (35174, 573940), (57394, 351740), (70348, 286970), (87935, 229576), (114788, 175870), (140696, 143485)]