78116980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{661}}^1$

素因数の和:1000

約数の個数: 48

約数和(自身を含む): 173496960

約数和(自身を除く): 95379980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 311, 380, 622, 661, 1244, 1322, 1555, 2644, 3110, 3305, 5909, 6220, 6610, 11818, 12559, 13220, 23636, 25118, 29545, 50236, 59090, 62795, 118180, 125590, 205571, 251180, 411142, 822284, 1027855, 2055710, 3905849, 4111420, 7811698, 15623396, 19529245, 39058490, 78116980]

約数ペア:

[(1, 78116980), (2, 39058490), (4, 19529245), (5, 15623396), (10, 7811698), (19, 4111420), (20, 3905849), (38, 2055710), (76, 1027855), (95, 822284), (190, 411142), (311, 251180), (380, 205571), (622, 125590), (661, 118180), (1244, 62795), (1322, 59090), (1555, 50236), (2644, 29545), (3110, 25118), (3305, 23636), (5909, 13220), (6220, 12559), (6610, 11818)]