20390612

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 20251948

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 89, 127, 164, 178, 254, 356, 451, 508, 902, 979, 1397, 1804, 1958, 2794, 3649, 3916, 5207, 5588, 7298, 10414, 11303, 14596, 20828, 22606, 40139, 45212, 57277, 80278, 114554, 124333, 160556, 229108, 248666, 463423, 497332, 926846, 1853692, 5097653, 10195306, 20390612]

約数ペア:

[(1, 20390612), (2, 10195306), (4, 5097653), (11, 1853692), (22, 926846), (41, 497332), (44, 463423), (82, 248666), (89, 229108), (127, 160556), (164, 124333), (178, 114554), (254, 80278), (356, 57277), (451, 45212), (508, 40139), (902, 22606), (979, 20828), (1397, 14596), (1804, 11303), (1958, 10414), (2794, 7298), (3649, 5588), (3916, 5207)]