21221538

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{3727}}^1$

素因数の和:3818

約数の個数: 32

約数和(自身を含む): 46346496

約数和(自身を除く): 25124958

約数列:

[1, 2, 3, 6, 13, 26, 39, 73, 78, 146, 219, 438, 949, 1898, 2847, 3727, 5694, 7454, 11181, 22362, 48451, 96902, 145353, 272071, 290706, 544142, 816213, 1632426, 3536923, 7073846, 10610769, 21221538]

約数ペア:

[(1, 21221538), (2, 10610769), (3, 7073846), (6, 3536923), (13, 1632426), (26, 816213), (39, 544142), (73, 290706), (78, 272071), (146, 145353), (219, 96902), (438, 48451), (949, 22362), (1898, 11181), (2847, 7454), (3727, 5694)]