308929520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{397}}^1$

素因数の和:618

約数の個数: 80

約数和(自身を含む): 735542208

約数和(自身を除く): 426612688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 137, 142, 274, 284, 355, 397, 548, 568, 685, 710, 794, 1096, 1136, 1370, 1420, 1588, 1985, 2192, 2740, 2840, 3176, 3970, 5480, 5680, 6352, 7940, 9727, 10960, 15880, 19454, 28187, 31760, 38908, 48635, 54389, 56374, 77816, 97270, 108778, 112748, 140935, 155632, 194540, 217556, 225496, 271945, 281870, 389080, 435112, 450992, 543890, 563740, 778160, 870224, 1087780, 1127480, 2175560, 2254960, 3861619, 4351120, 7723238, 15446476, 19308095, 30892952, 38616190, 61785904, 77232380, 154464760, 308929520]

約数ペア:

[(1, 308929520), (2, 154464760), (4, 77232380), (5, 61785904), (8, 38616190), (10, 30892952), (16, 19308095), (20, 15446476), (40, 7723238), (71, 4351120), (80, 3861619), (137, 2254960), (142, 2175560), (274, 1127480), (284, 1087780), (355, 870224), (397, 778160), (548, 563740), (568, 543890), (685, 450992), (710, 435112), (794, 389080), (1096, 281870), (1136, 271945), (1370, 225496), (1420, 217556), (1588, 194540), (1985, 155632), (2192, 140935), (2740, 112748), (2840, 108778), (3176, 97270), (3970, 77816), (5480, 56374), (5680, 54389), (6352, 48635), (7940, 38908), (9727, 31760), (10960, 28187), (15880, 19454)]