204889780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{1901}}^1$

素因数の和:2244

約数の個数: 48

約数和(自身を含む): 457256016

約数和(自身を除く): 252366236

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 317, 340, 634, 1268, 1585, 1901, 3170, 3802, 5389, 6340, 7604, 9505, 10778, 19010, 21556, 26945, 32317, 38020, 53890, 64634, 107780, 129268, 161585, 323170, 602617, 646340, 1205234, 2410468, 3013085, 6026170, 10244489, 12052340, 20488978, 40977956, 51222445, 102444890, 204889780]

約数ペア:

[(1, 204889780), (2, 102444890), (4, 51222445), (5, 40977956), (10, 20488978), (17, 12052340), (20, 10244489), (34, 6026170), (68, 3013085), (85, 2410468), (170, 1205234), (317, 646340), (340, 602617), (634, 323170), (1268, 161585), (1585, 129268), (1901, 107780), (3170, 64634), (3802, 53890), (5389, 38020), (6340, 32317), (7604, 26945), (9505, 21556), (10778, 19010)]