21085304

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{787}}^1$

素因数の和:1007

約数の個数: 32

約数和(自身を含む): 42126480

約数和(自身を除く): 21041176

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 197, 394, 787, 788, 1574, 1576, 3148, 3349, 6296, 6698, 13379, 13396, 26758, 26792, 53516, 107032, 155039, 310078, 620156, 1240312, 2635663, 5271326, 10542652, 21085304]

約数ペア:

[(1, 21085304), (2, 10542652), (4, 5271326), (8, 2635663), (17, 1240312), (34, 620156), (68, 310078), (136, 155039), (197, 107032), (394, 53516), (787, 26792), (788, 26758), (1574, 13396), (1576, 13379), (3148, 6698), (3349, 6296)]