805240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 1859760

約数和(自身を除く): 1054520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 491, 820, 982, 1640, 1964, 2455, 3928, 4910, 9820, 19640, 20131, 40262, 80524, 100655, 161048, 201310, 402620, 805240]

約数ペア:

[(1, 805240), (2, 402620), (4, 201310), (5, 161048), (8, 100655), (10, 80524), (20, 40262), (40, 20131), (41, 19640), (82, 9820), (164, 4910), (205, 3928), (328, 2455), (410, 1964), (491, 1640), (820, 982)]