261240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{311}}^1$

素因数の和:332

約数の個数: 64

約数和(自身を含む): 898560

約数和(自身を除く): 637320

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, 311, 420, 622, 840, 933, 1244, 1555, 1866, 2177, 2488, 3110, 3732, 4354, 4665, 6220, 6531, 7464, 8708, 9330, 10885, 12440, 13062, 17416, 18660, 21770, 26124, 32655, 37320, 43540, 52248, 65310, 87080, 130620, 261240]

約数ペア:

[(1, 261240), (2, 130620), (3, 87080), (4, 65310), (5, 52248), (6, 43540), (7, 37320), (8, 32655), (10, 26124), (12, 21770), (14, 18660), (15, 17416), (20, 13062), (21, 12440), (24, 10885), (28, 9330), (30, 8708), (35, 7464), (40, 6531), (42, 6220), (56, 4665), (60, 4354), (70, 3732), (84, 3110), (105, 2488), (120, 2177), (140, 1866), (168, 1555), (210, 1244), (280, 933), (311, 840), (420, 622)]