1279780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1049}}^1$

素因数の和:1119

約数の個数: 24

約数和(自身を含む): 2734200

約数和(自身を除く): 1454420

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1049, 1220, 2098, 4196, 5245, 10490, 20980, 63989, 127978, 255956, 319945, 639890, 1279780]

約数ペア:

[(1, 1279780), (2, 639890), (4, 319945), (5, 255956), (10, 127978), (20, 63989), (61, 20980), (122, 10490), (244, 5245), (305, 4196), (610, 2098), (1049, 1220)]