21204291212

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{2069923}}^1$

素因数の和:2070137

約数の個数: 24

約数和(自身を含む): 40164805296

約数和(自身を除く): 18960514084

約数列:

[1, 2, 4, 13, 26, 52, 197, 394, 788, 2561, 5122, 10244, 2069923, 4139846, 8279692, 26908999, 53817998, 107635996, 407774831, 815549662, 1631099324, 5301072803, 10602145606, 21204291212]

約数ペア:

[(1, 21204291212), (2, 10602145606), (4, 5301072803), (13, 1631099324), (26, 815549662), (52, 407774831), (197, 107635996), (394, 53817998), (788, 26908999), (2561, 8279692), (5122, 4139846), (10244, 2069923)]