78844940

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{64627}}^1$

素因数の和:64697

約数の個数: 24

約数和(自身を含む): 168291312

約数和(自身を除く): 89446372

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 64627, 129254, 258508, 323135, 646270, 1292540, 3942247, 7884494, 15768988, 19711235, 39422470, 78844940]

約数ペア:

[(1, 78844940), (2, 39422470), (4, 19711235), (5, 15768988), (10, 7884494), (20, 3942247), (61, 1292540), (122, 646270), (244, 323135), (305, 258508), (610, 129254), (1220, 64627)]