20378360

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3889}}^1$

素因数の和:4031

約数の個数: 32

約数和(自身を含む): 46213200

約数和(自身を除く): 25834840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3889, 5240, 7778, 15556, 19445, 31112, 38890, 77780, 155560, 509459, 1018918, 2037836, 2547295, 4075672, 5094590, 10189180, 20378360]

約数ペア:

[(1, 20378360), (2, 10189180), (4, 5094590), (5, 4075672), (8, 2547295), (10, 2037836), (20, 1018918), (40, 509459), (131, 155560), (262, 77780), (524, 38890), (655, 31112), (1048, 19445), (1310, 15556), (2620, 7778), (3889, 5240)]