80705940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:406

約数の個数: 144

約数和(自身を含む): 266519232

約数和(自身を除く): 185813292

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 97, 98, 105, 140, 147, 194, 196, 210, 245, 283, 291, 294, 388, 420, 485, 490, 566, 582, 588, 679, 735, 849, 970, 980, 1132, 1164, 1358, 1415, 1455, 1470, 1698, 1940, 1981, 2037, 2716, 2830, 2910, 2940, 3395, 3396, 3962, 4074, 4245, 4753, 5660, 5820, 5943, 6790, 7924, 8148, 8490, 9506, 9905, 10185, 11886, 13580, 13867, 14259, 16980, 19012, 19810, 20370, 23765, 23772, 27451, 27734, 28518, 29715, 39620, 40740, 41601, 47530, 54902, 55468, 57036, 59430, 69335, 71295, 82353, 83202, 95060, 109804, 118860, 137255, 138670, 142590, 164706, 166404, 192157, 208005, 274510, 277340, 285180, 329412, 384314, 411765, 416010, 549020, 576471, 768628, 823530, 832020, 960785, 1152942, 1345099, 1647060, 1921570, 2305884, 2690198, 2882355, 3843140, 4035297, 5380396, 5764710, 6725495, 8070594, 11529420, 13450990, 16141188, 20176485, 26901980, 40352970, 80705940]

約数ペア:

[(1, 80705940), (2, 40352970), (3, 26901980), (4, 20176485), (5, 16141188), (6, 13450990), (7, 11529420), (10, 8070594), (12, 6725495), (14, 5764710), (15, 5380396), (20, 4035297), (21, 3843140), (28, 2882355), (30, 2690198), (35, 2305884), (42, 1921570), (49, 1647060), (60, 1345099), (70, 1152942), (84, 960785), (97, 832020), (98, 823530), (105, 768628), (140, 576471), (147, 549020), (194, 416010), (196, 411765), (210, 384314), (245, 329412), (283, 285180), (291, 277340), (294, 274510), (388, 208005), (420, 192157), (485, 166404), (490, 164706), (566, 142590), (582, 138670), (588, 137255), (679, 118860), (735, 109804), (849, 95060), (970, 83202), (980, 82353), (1132, 71295), (1164, 69335), (1358, 59430), (1415, 57036), (1455, 55468), (1470, 54902), (1698, 47530), (1940, 41601), (1981, 40740), (2037, 39620), (2716, 29715), (2830, 28518), (2910, 27734), (2940, 27451), (3395, 23772), (3396, 23765), (3962, 20370), (4074, 19810), (4245, 19012), (4753, 16980), (5660, 14259), (5820, 13867), (5943, 13580), (6790, 11886), (7924, 10185), (8148, 9905), (8490, 9506)]