256799340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{203809}}^1$

素因数の和:203831

約数の個数: 72

約数和(自身を含む): 890242080

約数和(自身を除く): 633442740

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, 203809, 407618, 611427, 815236, 1019045, 1222854, 1426663, 1834281, 2038090, 2445708, 2853326, 3057135, 3668562, 4076180, 4279989, 5706652, 6114270, 7133315, 7337124, 8559978, 9171405, 12228540, 12839967, 14266630, 17119956, 18342810, 21399945, 25679934, 28533260, 36685620, 42799890, 51359868, 64199835, 85599780, 128399670, 256799340]

約数ペア:

[(1, 256799340), (2, 128399670), (3, 85599780), (4, 64199835), (5, 51359868), (6, 42799890), (7, 36685620), (9, 28533260), (10, 25679934), (12, 21399945), (14, 18342810), (15, 17119956), (18, 14266630), (20, 12839967), (21, 12228540), (28, 9171405), (30, 8559978), (35, 7337124), (36, 7133315), (42, 6114270), (45, 5706652), (60, 4279989), (63, 4076180), (70, 3668562), (84, 3057135), (90, 2853326), (105, 2445708), (126, 2038090), (140, 1834281), (180, 1426663), (210, 1222854), (252, 1019045), (315, 815236), (420, 611427), (630, 407618), (1260, 203809)]