257364660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{87539}}^1$

素因数の和:87565

約数の個数: 72

約数和(自身を含む): 838283040

約数和(自身を除く): 580918380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 87539, 175078, 262617, 350156, 437695, 525234, 612773, 875390, 1050468, 1225546, 1313085, 1750780, 1838319, 2451092, 2626170, 3063865, 3676638, 4289411, 5252340, 6127730, 7353276, 8578822, 9191595, 12255460, 12868233, 17157644, 18383190, 21447055, 25736466, 36766380, 42894110, 51472932, 64341165, 85788220, 128682330, 257364660]

約数ペア:

[(1, 257364660), (2, 128682330), (3, 85788220), (4, 64341165), (5, 51472932), (6, 42894110), (7, 36766380), (10, 25736466), (12, 21447055), (14, 18383190), (15, 17157644), (20, 12868233), (21, 12255460), (28, 9191595), (30, 8578822), (35, 7353276), (42, 6127730), (49, 5252340), (60, 4289411), (70, 3676638), (84, 3063865), (98, 2626170), (105, 2451092), (140, 1838319), (147, 1750780), (196, 1313085), (210, 1225546), (245, 1050468), (294, 875390), (420, 612773), (490, 525234), (588, 437695), (735, 350156), (980, 262617), (1470, 175078), (2940, 87539)]