256307940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{203419}}^1$

素因数の和:203441

約数の個数: 72

約数和(自身を含む): 888538560

約数和(自身を除く): 632230620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 203419, 406838, 610257, 813676, 1017095, 1220514, 1423933, 1830771, 2034190, 2441028, 2847866, 3051285, 3661542, 4068380, 4271799, 5695732, 6102570, 7119665, 7323084, 8543598, 9153855, 12205140, 12815397, 14239330, 17087196, 18307710, 21358995, 25630794, 28478660, 36615420, 42717990, 51261588, 64076985, 85435980, 128153970, 256307940]

約数ペア:

[(1, 256307940), (2, 128153970), (3, 85435980), (4, 64076985), (5, 51261588), (6, 42717990), (7, 36615420), (9, 28478660), (10, 25630794), (12, 21358995), (14, 18307710), (15, 17087196), (18, 14239330), (20, 12815397), (21, 12205140), (28, 9153855), (30, 8543598), (35, 7323084), (36, 7119665), (42, 6102570), (45, 5695732), (60, 4271799), (63, 4068380), (70, 3661542), (84, 3051285), (90, 2847866), (105, 2441028), (126, 2034190), (140, 1830771), (180, 1423933), (210, 1220514), (252, 1017095), (315, 813676), (420, 610257), (630, 406838), (1260, 203419)]