9004940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 21821184

約数和(自身を除く): 12816244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 491, 524, 655, 917, 982, 1310, 1834, 1964, 2455, 2620, 3437, 3668, 4585, 4910, 6874, 9170, 9820, 13748, 17185, 18340, 34370, 64321, 68740, 128642, 257284, 321605, 450247, 643210, 900494, 1286420, 1800988, 2251235, 4502470, 9004940]

約数ペア:

[(1, 9004940), (2, 4502470), (4, 2251235), (5, 1800988), (7, 1286420), (10, 900494), (14, 643210), (20, 450247), (28, 321605), (35, 257284), (70, 128642), (131, 68740), (140, 64321), (262, 34370), (491, 18340), (524, 17185), (655, 13748), (917, 9820), (982, 9170), (1310, 6874), (1834, 4910), (1964, 4585), (2455, 3668), (2620, 3437)]