1629640

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 3706560

約数和(自身を除く): 2076920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 311, 524, 622, 655, 1048, 1244, 1310, 1555, 2488, 2620, 3110, 5240, 6220, 12440, 40741, 81482, 162964, 203705, 325928, 407410, 814820, 1629640]

約数ペア:

[(1, 1629640), (2, 814820), (4, 407410), (5, 325928), (8, 203705), (10, 162964), (20, 81482), (40, 40741), (131, 12440), (262, 6220), (311, 5240), (524, 3110), (622, 2620), (655, 2488), (1048, 1555), (1244, 1310)]