21379150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1061}}^1$

素因数の和:1117

約数の個数: 48

約数和(自身を含む): 44247168

約数和(自身を除く): 22868018

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1061, 1550, 2015, 2122, 4030, 5305, 10075, 10610, 13793, 20150, 26525, 27586, 32891, 53050, 65782, 68965, 137930, 164455, 328910, 344825, 427583, 689650, 822275, 855166, 1644550, 2137915, 4275830, 10689575, 21379150]

約数ペア:

[(1, 21379150), (2, 10689575), (5, 4275830), (10, 2137915), (13, 1644550), (25, 855166), (26, 822275), (31, 689650), (50, 427583), (62, 344825), (65, 328910), (130, 164455), (155, 137930), (310, 68965), (325, 65782), (403, 53050), (650, 32891), (775, 27586), (806, 26525), (1061, 20150), (1550, 13793), (2015, 10610), (2122, 10075), (4030, 5305)]