247949780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{30763}}^1$

素因数の和:30816

約数の個数: 48

約数和(自身を含む): 578855424

約数和(自身を除く): 330905644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 30763, 61526, 123052, 153815, 307630, 399919, 615260, 799838, 953653, 1599676, 1907306, 1999595, 3814612, 3999190, 4768265, 7998380, 9536530, 12397489, 19073060, 24794978, 49589956, 61987445, 123974890, 247949780]

約数ペア:

[(1, 247949780), (2, 123974890), (4, 61987445), (5, 49589956), (10, 24794978), (13, 19073060), (20, 12397489), (26, 9536530), (31, 7998380), (52, 4768265), (62, 3999190), (65, 3814612), (124, 1999595), (130, 1907306), (155, 1599676), (260, 953653), (310, 799838), (403, 615260), (620, 399919), (806, 307630), (1612, 153815), (2015, 123052), (4030, 61526), (8060, 30763)]