257907720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{307033}}^1$

素因数の和:307054

約数の個数: 64

約数和(自身を含む): 884257920

約数和(自身を除く): 626350200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 307033, 614066, 921099, 1228132, 1535165, 1842198, 2149231, 2456264, 3070330, 3684396, 4298462, 4605495, 6140660, 6447693, 7368792, 8596924, 9210990, 10746155, 12281320, 12895386, 17193848, 18421980, 21492310, 25790772, 32238465, 36843960, 42984620, 51581544, 64476930, 85969240, 128953860, 257907720]

約数ペア:

[(1, 257907720), (2, 128953860), (3, 85969240), (4, 64476930), (5, 51581544), (6, 42984620), (7, 36843960), (8, 32238465), (10, 25790772), (12, 21492310), (14, 18421980), (15, 17193848), (20, 12895386), (21, 12281320), (24, 10746155), (28, 9210990), (30, 8596924), (35, 7368792), (40, 6447693), (42, 6140660), (56, 4605495), (60, 4298462), (70, 3684396), (84, 3070330), (105, 2456264), (120, 2149231), (140, 1842198), (168, 1535165), (210, 1228132), (280, 921099), (420, 614066), (840, 307033)]