778869780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{998551}}^1$

素因数の和:998576

約数の個数: 48

約数和(自身を含む): 2348594304

約数和(自身を除く): 1569724524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 998551, 1997102, 2995653, 3994204, 4992755, 5991306, 9985510, 11982612, 12981163, 14978265, 19971020, 25962326, 29956530, 38943489, 51924652, 59913060, 64905815, 77886978, 129811630, 155773956, 194717445, 259623260, 389434890, 778869780]

約数ペア:

[(1, 778869780), (2, 389434890), (3, 259623260), (4, 194717445), (5, 155773956), (6, 129811630), (10, 77886978), (12, 64905815), (13, 59913060), (15, 51924652), (20, 38943489), (26, 29956530), (30, 25962326), (39, 19971020), (52, 14978265), (60, 12981163), (65, 11982612), (78, 9985510), (130, 5991306), (156, 4992755), (195, 3994204), (260, 2995653), (390, 1997102), (780, 998551)]