21865172

素因数分解:

$2^2\times 7^2\times {\mathrm{281}}^1\times {\mathrm{397}}^1$

素因数の和:696

約数の個数: 36

約数和(自身を含む): 44782164

約数和(自身を除く): 22916992

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 281, 397, 562, 794, 1124, 1588, 1967, 2779, 3934, 5558, 7868, 11116, 13769, 19453, 27538, 38906, 55076, 77812, 111557, 223114, 446228, 780899, 1561798, 3123596, 5466293, 10932586, 21865172]

約数ペア:

[(1, 21865172), (2, 10932586), (4, 5466293), (7, 3123596), (14, 1561798), (28, 780899), (49, 446228), (98, 223114), (196, 111557), (281, 77812), (397, 55076), (562, 38906), (794, 27538), (1124, 19453), (1588, 13769), (1967, 11116), (2779, 7868), (3934, 5558)]