20958620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61643}}^1$

素因数の和:61669

約数の個数: 24

約数和(自身を含む): 46602864

約数和(自身を除く): 25644244

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61643, 123286, 246572, 308215, 616430, 1047931, 1232860, 2095862, 4191724, 5239655, 10479310, 20958620]

約数ペア:

[(1, 20958620), (2, 10479310), (4, 5239655), (5, 4191724), (10, 2095862), (17, 1232860), (20, 1047931), (34, 616430), (68, 308215), (85, 246572), (170, 123286), (340, 61643)]