81429180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{27697}}^1$

素因数の和:27723

約数の個数: 72

約数和(自身を含む): 265236048

約数和(自身を除く): 183806868

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 27697, 55394, 83091, 110788, 138485, 166182, 193879, 276970, 332364, 387758, 415455, 553940, 581637, 775516, 830910, 969395, 1163274, 1357153, 1661820, 1938790, 2326548, 2714306, 2908185, 3877580, 4071459, 5428612, 5816370, 6785765, 8142918, 11632740, 13571530, 16285836, 20357295, 27143060, 40714590, 81429180]

約数ペア:

[(1, 81429180), (2, 40714590), (3, 27143060), (4, 20357295), (5, 16285836), (6, 13571530), (7, 11632740), (10, 8142918), (12, 6785765), (14, 5816370), (15, 5428612), (20, 4071459), (21, 3877580), (28, 2908185), (30, 2714306), (35, 2326548), (42, 1938790), (49, 1661820), (60, 1357153), (70, 1163274), (84, 969395), (98, 830910), (105, 775516), (140, 581637), (147, 553940), (196, 415455), (210, 387758), (245, 332364), (294, 276970), (420, 193879), (490, 166182), (588, 138485), (735, 110788), (980, 83091), (1470, 55394), (2940, 27697)]