20814710

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{397}}^1$

素因数の和:525

約数の個数: 48

約数和(自身を含む): 44101584

約数和(自身を除く): 23286874

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 107, 214, 245, 397, 490, 535, 749, 794, 1070, 1498, 1985, 2779, 3745, 3970, 5243, 5558, 7490, 10486, 13895, 19453, 26215, 27790, 38906, 42479, 52430, 84958, 97265, 194530, 212395, 297353, 424790, 594706, 1486765, 2081471, 2973530, 4162942, 10407355, 20814710]

約数ペア:

[(1, 20814710), (2, 10407355), (5, 4162942), (7, 2973530), (10, 2081471), (14, 1486765), (35, 594706), (49, 424790), (70, 297353), (98, 212395), (107, 194530), (214, 97265), (245, 84958), (397, 52430), (490, 42479), (535, 38906), (749, 27790), (794, 26215), (1070, 19453), (1498, 13895), (1985, 10486), (2779, 7490), (3745, 5558), (3970, 5243)]