78881980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{2707}}^1$

素因数の和:2794

約数の個数: 48

約数和(自身を含む): 174698496

約数和(自身を除く): 95816516

約数列:

[1, 2, 4, 5, 10, 20, 31, 47, 62, 94, 124, 155, 188, 235, 310, 470, 620, 940, 1457, 2707, 2914, 5414, 5828, 7285, 10828, 13535, 14570, 27070, 29140, 54140, 83917, 127229, 167834, 254458, 335668, 419585, 508916, 636145, 839170, 1272290, 1678340, 2544580, 3944099, 7888198, 15776396, 19720495, 39440990, 78881980]

約数ペア:

[(1, 78881980), (2, 39440990), (4, 19720495), (5, 15776396), (10, 7888198), (20, 3944099), (31, 2544580), (47, 1678340), (62, 1272290), (94, 839170), (124, 636145), (155, 508916), (188, 419585), (235, 335668), (310, 254458), (470, 167834), (620, 127229), (940, 83917), (1457, 54140), (2707, 29140), (2914, 27070), (5414, 14570), (5828, 13535), (7285, 10828)]