991231532880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23971}}^1\times {\mathrm{172297}}^1$

素因数の和:196284

約数の個数: 80

約数和(自身を含む): 3072963776064

約数和(自身を除く): 2081732243184

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 23971, 47942, 71913, 95884, 119855, 143826, 172297, 191768, 239710, 287652, 344594, 359565, 383536, 479420, 516891, 575304, 689188, 719130, 861485, 958840, 1033782, 1150608, 1378376, 1438260, 1722970, 1917680, 2067564, 2584455, 2756752, 2876520, 3445940, 4135128, 5168910, 5753040, 6891880, 8270256, 10337820, 13783760, 20675640, 41351280, 4130131387, 8260262774, 12390394161, 16520525548, 20650656935, 24780788322, 33041051096, 41301313870, 49561576644, 61951970805, 66082102192, 82602627740, 99123153288, 123903941610, 165205255480, 198246306576, 247807883220, 330410510960, 495615766440, 991231532880]

約数ペア:

[(1, 991231532880), (2, 495615766440), (3, 330410510960), (4, 247807883220), (5, 198246306576), (6, 165205255480), (8, 123903941610), (10, 99123153288), (12, 82602627740), (15, 66082102192), (16, 61951970805), (20, 49561576644), (24, 41301313870), (30, 33041051096), (40, 24780788322), (48, 20650656935), (60, 16520525548), (80, 12390394161), (120, 8260262774), (240, 4130131387), (23971, 41351280), (47942, 20675640), (71913, 13783760), (95884, 10337820), (119855, 8270256), (143826, 6891880), (172297, 5753040), (191768, 5168910), (239710, 4135128), (287652, 3445940), (344594, 2876520), (359565, 2756752), (383536, 2584455), (479420, 2067564), (516891, 1917680), (575304, 1722970), (689188, 1438260), (719130, 1378376), (861485, 1150608), (958840, 1033782)]