21379904

素因数分解:

$2^6\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3671}}^1$

素因数の和:3703

約数の個数: 56

約数和(自身を含む): 52230528

約数和(自身を除く): 30850624

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 182, 208, 224, 364, 416, 448, 728, 832, 1456, 2912, 3671, 5824, 7342, 14684, 25697, 29368, 47723, 51394, 58736, 95446, 102788, 117472, 190892, 205576, 234944, 334061, 381784, 411152, 668122, 763568, 822304, 1336244, 1527136, 1644608, 2672488, 3054272, 5344976, 10689952, 21379904]

約数ペア:

[(1, 21379904), (2, 10689952), (4, 5344976), (7, 3054272), (8, 2672488), (13, 1644608), (14, 1527136), (16, 1336244), (26, 822304), (28, 763568), (32, 668122), (52, 411152), (56, 381784), (64, 334061), (91, 234944), (104, 205576), (112, 190892), (182, 117472), (208, 102788), (224, 95446), (364, 58736), (416, 51394), (448, 47723), (728, 29368), (832, 25697), (1456, 14684), (2912, 7342), (3671, 5824)]