78017780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{63949}}^1$

素因数の和:64019

約数の個数: 24

約数和(自身を含む): 166525800

約数和(自身を除く): 88508020

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 63949, 127898, 255796, 319745, 639490, 1278980, 3900889, 7801778, 15603556, 19504445, 39008890, 78017780]

約数ペア:

[(1, 78017780), (2, 39008890), (4, 19504445), (5, 15603556), (10, 7801778), (20, 3900889), (61, 1278980), (122, 639490), (244, 319745), (305, 255796), (610, 127898), (1220, 63949)]