81481880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{3697}}^1$

素因数の和:3756

約数の個数: 64

約数和(自身を含む): 199692000

約数和(自身を除く): 118210120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 58, 76, 95, 116, 145, 152, 190, 232, 290, 380, 551, 580, 760, 1102, 1160, 2204, 2755, 3697, 4408, 5510, 7394, 11020, 14788, 18485, 22040, 29576, 36970, 70243, 73940, 107213, 140486, 147880, 214426, 280972, 351215, 428852, 536065, 561944, 702430, 857704, 1072130, 1404860, 2037047, 2144260, 2809720, 4074094, 4288520, 8148188, 10185235, 16296376, 20370470, 40740940, 81481880]

約数ペア:

[(1, 81481880), (2, 40740940), (4, 20370470), (5, 16296376), (8, 10185235), (10, 8148188), (19, 4288520), (20, 4074094), (29, 2809720), (38, 2144260), (40, 2037047), (58, 1404860), (76, 1072130), (95, 857704), (116, 702430), (145, 561944), (152, 536065), (190, 428852), (232, 351215), (290, 280972), (380, 214426), (551, 147880), (580, 140486), (760, 107213), (1102, 73940), (1160, 70243), (2204, 36970), (2755, 29576), (3697, 22040), (4408, 18485), (5510, 14788), (7394, 11020)]