81725980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{4261}}^1$

素因数の和:4414

約数の個数: 48

約数和(自身を含む): 197620416

約数和(自身を除く): 115894436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1370, 1918, 2740, 3836, 4261, 4795, 8522, 9590, 17044, 19180, 21305, 29827, 42610, 59654, 85220, 119308, 149135, 298270, 583757, 596540, 1167514, 2335028, 2918785, 4086299, 5837570, 8172598, 11675140, 16345196, 20431495, 40862990, 81725980]

約数ペア:

[(1, 81725980), (2, 40862990), (4, 20431495), (5, 16345196), (7, 11675140), (10, 8172598), (14, 5837570), (20, 4086299), (28, 2918785), (35, 2335028), (70, 1167514), (137, 596540), (140, 583757), (274, 298270), (548, 149135), (685, 119308), (959, 85220), (1370, 59654), (1918, 42610), (2740, 29827), (3836, 21305), (4261, 19180), (4795, 17044), (8522, 9590)]