1643365490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{407783}}^1$

素因数の和:407834

約数の個数: 32

約数和(自身を含む): 3288370176

約数和(自身を除く): 1645004686

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 407783, 815566, 2038915, 4077830, 5301179, 10602358, 12641273, 25282546, 26505895, 53011790, 63206365, 126412730, 164336549, 328673098, 821682745, 1643365490]

約数ペア:

[(1, 1643365490), (2, 821682745), (5, 328673098), (10, 164336549), (13, 126412730), (26, 63206365), (31, 53011790), (62, 26505895), (65, 25282546), (130, 12641273), (155, 10602358), (310, 5301179), (403, 4077830), (806, 2038915), (2015, 815566), (4030, 407783)]