80345980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2161}}^1$

素因数の和:2207

約数の個数: 72

約数和(自身を含む): 199405584

約数和(自身を除く): 119059604

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 169, 220, 260, 286, 338, 572, 676, 715, 845, 1430, 1690, 1859, 2161, 2860, 3380, 3718, 4322, 7436, 8644, 9295, 10805, 18590, 21610, 23771, 28093, 37180, 43220, 47542, 56186, 95084, 112372, 118855, 140465, 237710, 280930, 309023, 365209, 475420, 561860, 618046, 730418, 1236092, 1460836, 1545115, 1826045, 3090230, 3652090, 4017299, 6180460, 7304180, 8034598, 16069196, 20086495, 40172990, 80345980]

約数ペア:

[(1, 80345980), (2, 40172990), (4, 20086495), (5, 16069196), (10, 8034598), (11, 7304180), (13, 6180460), (20, 4017299), (22, 3652090), (26, 3090230), (44, 1826045), (52, 1545115), (55, 1460836), (65, 1236092), (110, 730418), (130, 618046), (143, 561860), (169, 475420), (220, 365209), (260, 309023), (286, 280930), (338, 237710), (572, 140465), (676, 118855), (715, 112372), (845, 95084), (1430, 56186), (1690, 47542), (1859, 43220), (2161, 37180), (2860, 28093), (3380, 23771), (3718, 21610), (4322, 18590), (7436, 10805), (8644, 9295)]