20320497

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:362

約数の個数: 32

約数和(自身を含む): 31334400

約数和(自身を除く): 11013903

約数列:

[1, 3, 9, 27, 47, 67, 141, 201, 239, 423, 603, 717, 1269, 1809, 2151, 3149, 6453, 9447, 11233, 16013, 28341, 33699, 48039, 85023, 101097, 144117, 303291, 432351, 752611, 2257833, 6773499, 20320497]

約数ペア:

[(1, 20320497), (3, 6773499), (9, 2257833), (27, 752611), (47, 432351), (67, 303291), (141, 144117), (201, 101097), (239, 85023), (423, 48039), (603, 33699), (717, 28341), (1269, 16013), (1809, 11233), (2151, 9447), (3149, 6453)]