80978180

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{277}}^1\times {\mathrm{311}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 174859776

約数和(自身を除く): 93881596

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 277, 311, 470, 554, 622, 940, 1108, 1244, 1385, 1555, 2770, 3110, 5540, 6220, 13019, 14617, 26038, 29234, 52076, 58468, 65095, 73085, 86147, 130190, 146170, 172294, 260380, 292340, 344588, 430735, 861470, 1722940, 4048909, 8097818, 16195636, 20244545, 40489090, 80978180]

約数ペア:

[(1, 80978180), (2, 40489090), (4, 20244545), (5, 16195636), (10, 8097818), (20, 4048909), (47, 1722940), (94, 861470), (188, 430735), (235, 344588), (277, 292340), (311, 260380), (470, 172294), (554, 146170), (622, 130190), (940, 86147), (1108, 73085), (1244, 65095), (1385, 58468), (1555, 52076), (2770, 29234), (3110, 26038), (5540, 14617), (6220, 13019)]