320195920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1847}}^1$

素因数の和:2068

約数の個数: 80

約数和(自身を含む): 816697728

約数和(自身を除く): 496501808

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 197, 220, 394, 440, 788, 880, 985, 1576, 1847, 1970, 2167, 3152, 3694, 3940, 4334, 7388, 7880, 8668, 9235, 10835, 14776, 15760, 17336, 18470, 20317, 21670, 29552, 34672, 36940, 40634, 43340, 73880, 81268, 86680, 101585, 147760, 162536, 173360, 203170, 325072, 363859, 406340, 727718, 812680, 1455436, 1625360, 1819295, 2910872, 3638590, 4002449, 5821744, 7277180, 8004898, 14554360, 16009796, 20012245, 29108720, 32019592, 40024490, 64039184, 80048980, 160097960, 320195920]

約数ペア:

[(1, 320195920), (2, 160097960), (4, 80048980), (5, 64039184), (8, 40024490), (10, 32019592), (11, 29108720), (16, 20012245), (20, 16009796), (22, 14554360), (40, 8004898), (44, 7277180), (55, 5821744), (80, 4002449), (88, 3638590), (110, 2910872), (176, 1819295), (197, 1625360), (220, 1455436), (394, 812680), (440, 727718), (788, 406340), (880, 363859), (985, 325072), (1576, 203170), (1847, 173360), (1970, 162536), (2167, 147760), (3152, 101585), (3694, 86680), (3940, 81268), (4334, 73880), (7388, 43340), (7880, 40634), (8668, 36940), (9235, 34672), (10835, 29552), (14776, 21670), (15760, 20317), (17336, 18470)]