257011020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{203977}}^1$

素因数の和:203999

約数の個数: 72

約数和(自身を含む): 890975904

約数和(自身を除く): 633964884

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, 203977, 407954, 611931, 815908, 1019885, 1223862, 1427839, 1835793, 2039770, 2447724, 2855678, 3059655, 3671586, 4079540, 4283517, 5711356, 6119310, 7139195, 7343172, 8567034, 9178965, 12238620, 12850551, 14278390, 17134068, 18357930, 21417585, 25701102, 28556780, 36715860, 42835170, 51402204, 64252755, 85670340, 128505510, 257011020]

約数ペア:

[(1, 257011020), (2, 128505510), (3, 85670340), (4, 64252755), (5, 51402204), (6, 42835170), (7, 36715860), (9, 28556780), (10, 25701102), (12, 21417585), (14, 18357930), (15, 17134068), (18, 14278390), (20, 12850551), (21, 12238620), (28, 9178965), (30, 8567034), (35, 7343172), (36, 7139195), (42, 6119310), (45, 5711356), (60, 4283517), (63, 4079540), (70, 3671586), (84, 3059655), (90, 2855678), (105, 2447724), (126, 2039770), (140, 1835793), (180, 1427839), (210, 1223862), (252, 1019885), (315, 815908), (420, 611931), (630, 407954), (1260, 203977)]