81555760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7129}}^1$

素因数の和:7166

約数の個数: 80

約数和(自身を含む): 222798240

約数和(自身を除く): 141242480

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 2288, 2860, 5720, 7129, 11440, 14258, 28516, 35645, 57032, 71290, 78419, 92677, 114064, 142580, 156838, 185354, 285160, 313676, 370708, 392095, 463385, 570320, 627352, 741416, 784190, 926770, 1019447, 1254704, 1482832, 1568380, 1853540, 2038894, 3136760, 3707080, 4077788, 5097235, 6273520, 7414160, 8155576, 10194470, 16311152, 20388940, 40777880, 81555760]

約数ペア:

[(1, 81555760), (2, 40777880), (4, 20388940), (5, 16311152), (8, 10194470), (10, 8155576), (11, 7414160), (13, 6273520), (16, 5097235), (20, 4077788), (22, 3707080), (26, 3136760), (40, 2038894), (44, 1853540), (52, 1568380), (55, 1482832), (65, 1254704), (80, 1019447), (88, 926770), (104, 784190), (110, 741416), (130, 627352), (143, 570320), (176, 463385), (208, 392095), (220, 370708), (260, 313676), (286, 285160), (440, 185354), (520, 156838), (572, 142580), (715, 114064), (880, 92677), (1040, 78419), (1144, 71290), (1430, 57032), (2288, 35645), (2860, 28516), (5720, 14258), (7129, 11440)]