21391454

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{587}}^1$

素因数の和:752

約数の個数: 32

約数和(自身を含む): 38949120

約数和(自身を除く): 17557666

約数列:

[1, 2, 7, 14, 19, 38, 133, 137, 266, 274, 587, 959, 1174, 1918, 2603, 4109, 5206, 8218, 11153, 18221, 22306, 36442, 78071, 80419, 156142, 160838, 562933, 1125866, 1527961, 3055922, 10695727, 21391454]

約数ペア:

[(1, 21391454), (2, 10695727), (7, 3055922), (14, 1527961), (19, 1125866), (38, 562933), (133, 160838), (137, 156142), (266, 80419), (274, 78071), (587, 36442), (959, 22306), (1174, 18221), (1918, 11153), (2603, 8218), (4109, 5206)]