123384940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{919}}^1$

素因数の和:1079

約数の個数: 72

約数和(自身を含む): 303942240

約数和(自身を除く): 180557300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 137, 140, 196, 245, 274, 490, 548, 685, 919, 959, 980, 1370, 1838, 1918, 2740, 3676, 3836, 4595, 4795, 6433, 6713, 9190, 9590, 12866, 13426, 18380, 19180, 25732, 26852, 32165, 33565, 45031, 64330, 67130, 90062, 125903, 128660, 134260, 180124, 225155, 251806, 450310, 503612, 629515, 881321, 900620, 1259030, 1762642, 2518060, 3525284, 4406605, 6169247, 8813210, 12338494, 17626420, 24676988, 30846235, 61692470, 123384940]

約数ペア:

[(1, 123384940), (2, 61692470), (4, 30846235), (5, 24676988), (7, 17626420), (10, 12338494), (14, 8813210), (20, 6169247), (28, 4406605), (35, 3525284), (49, 2518060), (70, 1762642), (98, 1259030), (137, 900620), (140, 881321), (196, 629515), (245, 503612), (274, 450310), (490, 251806), (548, 225155), (685, 180124), (919, 134260), (959, 128660), (980, 125903), (1370, 90062), (1838, 67130), (1918, 64330), (2740, 45031), (3676, 33565), (3836, 32165), (4595, 26852), (4795, 25732), (6433, 19180), (6713, 18380), (9190, 13426), (9590, 12866)]