83846740

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{431}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 180278784

約数和(自身を除く): 96432044

約数列:

[1, 2, 4, 5, 10, 20, 71, 137, 142, 274, 284, 355, 431, 548, 685, 710, 862, 1370, 1420, 1724, 2155, 2740, 4310, 8620, 9727, 19454, 30601, 38908, 48635, 59047, 61202, 97270, 118094, 122404, 153005, 194540, 236188, 295235, 306010, 590470, 612020, 1180940, 4192337, 8384674, 16769348, 20961685, 41923370, 83846740]

約数ペア:

[(1, 83846740), (2, 41923370), (4, 20961685), (5, 16769348), (10, 8384674), (20, 4192337), (71, 1180940), (137, 612020), (142, 590470), (274, 306010), (284, 295235), (355, 236188), (431, 194540), (548, 153005), (685, 122404), (710, 118094), (862, 97270), (1370, 61202), (1420, 59047), (1724, 48635), (2155, 38908), (2740, 30601), (4310, 19454), (8620, 9727)]