78649389

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 143881920

約数和(自身を除く): 65232531

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 83, 89, 91, 117, 169, 249, 267, 273, 507, 581, 623, 747, 801, 819, 1079, 1157, 1183, 1521, 1743, 1869, 3237, 3471, 3549, 5229, 5607, 7387, 7553, 8099, 9711, 10413, 10647, 14027, 15041, 22161, 22659, 24297, 42081, 45123, 51709, 66483, 67977, 72891, 96031, 98189, 105287, 126243, 135369, 155127, 288093, 294567, 315861, 465381, 672217, 864279, 883701, 947583, 1248403, 2016651, 3745209, 6049953, 8738821, 11235627, 26216463, 78649389]

約数ペア:

[(1, 78649389), (3, 26216463), (7, 11235627), (9, 8738821), (13, 6049953), (21, 3745209), (39, 2016651), (63, 1248403), (83, 947583), (89, 883701), (91, 864279), (117, 672217), (169, 465381), (249, 315861), (267, 294567), (273, 288093), (507, 155127), (581, 135369), (623, 126243), (747, 105287), (801, 98189), (819, 96031), (1079, 72891), (1157, 67977), (1183, 66483), (1521, 51709), (1743, 45123), (1869, 42081), (3237, 24297), (3471, 22659), (3549, 22161), (5229, 15041), (5607, 14027), (7387, 10647), (7553, 10413), (8099, 9711)]