391488640

素因数分解:

$2^7\times 5^1\times {\mathrm{151}}^1\times {\mathrm{4051}}^1$

素因数の和:4221

約数の個数: 64

約数和(自身を含む): 942333120

約数和(自身を除く): 550844480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 151, 160, 302, 320, 604, 640, 755, 1208, 1510, 2416, 3020, 4051, 4832, 6040, 8102, 9664, 12080, 16204, 19328, 20255, 24160, 32408, 40510, 48320, 64816, 81020, 96640, 129632, 162040, 259264, 324080, 518528, 611701, 648160, 1223402, 1296320, 2446804, 2592640, 3058505, 4893608, 6117010, 9787216, 12234020, 19574432, 24468040, 39148864, 48936080, 78297728, 97872160, 195744320, 391488640]

約数ペア:

[(1, 391488640), (2, 195744320), (4, 97872160), (5, 78297728), (8, 48936080), (10, 39148864), (16, 24468040), (20, 19574432), (32, 12234020), (40, 9787216), (64, 6117010), (80, 4893608), (128, 3058505), (151, 2592640), (160, 2446804), (302, 1296320), (320, 1223402), (604, 648160), (640, 611701), (755, 518528), (1208, 324080), (1510, 259264), (2416, 162040), (3020, 129632), (4051, 96640), (4832, 81020), (6040, 64816), (8102, 48320), (9664, 40510), (12080, 32408), (16204, 24160), (19328, 20255)]