20998910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1223}}^1$

素因数の和:1348

約数の個数: 32

約数和(自身を含む): 40450752

約数和(自身を除く): 19451842

約数列:

[1, 2, 5, 10, 17, 34, 85, 101, 170, 202, 505, 1010, 1223, 1717, 2446, 3434, 6115, 8585, 12230, 17170, 20791, 41582, 103955, 123523, 207910, 247046, 617615, 1235230, 2099891, 4199782, 10499455, 20998910]

約数ペア:

[(1, 20998910), (2, 10499455), (5, 4199782), (10, 2099891), (17, 1235230), (34, 617615), (85, 247046), (101, 207910), (170, 123523), (202, 103955), (505, 41582), (1010, 20791), (1223, 17170), (1717, 12230), (2446, 8585), (3434, 6115)]