20900140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61471}}^1$

素因数の和:61497

約数の個数: 24

約数和(自身を含む): 46472832

約数和(自身を除く): 25572692

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61471, 122942, 245884, 307355, 614710, 1045007, 1229420, 2090014, 4180028, 5225035, 10450070, 20900140]

約数ペア:

[(1, 20900140), (2, 10450070), (4, 5225035), (5, 4180028), (10, 2090014), (17, 1229420), (20, 1045007), (34, 614710), (68, 307355), (85, 245884), (170, 122942), (340, 61471)]