21505692

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4447}}^1$

素因数の和:4498

約数の個数: 48

約数和(自身を含む): 55795712

約数和(自身を除く): 34290020

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 78, 93, 124, 156, 186, 372, 403, 806, 1209, 1612, 2418, 4447, 4836, 8894, 13341, 17788, 26682, 53364, 57811, 115622, 137857, 173433, 231244, 275714, 346866, 413571, 551428, 693732, 827142, 1654284, 1792141, 3584282, 5376423, 7168564, 10752846, 21505692]

約数ペア:

[(1, 21505692), (2, 10752846), (3, 7168564), (4, 5376423), (6, 3584282), (12, 1792141), (13, 1654284), (26, 827142), (31, 693732), (39, 551428), (52, 413571), (62, 346866), (78, 275714), (93, 231244), (124, 173433), (156, 137857), (186, 115622), (372, 57811), (403, 53364), (806, 26682), (1209, 17788), (1612, 13341), (2418, 8894), (4447, 4836)]