20763561

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4003}}^1$

素因数の和:4045

約数の個数: 32

約数和(自身を含む): 35875840

約数和(自身を除く): 15112279

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 4003, 5187, 12009, 28021, 52039, 76057, 84063, 156117, 228171, 364273, 532399, 988741, 1092819, 1597197, 2966223, 6921187, 20763561]

約数ペア:

[(1, 20763561), (3, 6921187), (7, 2966223), (13, 1597197), (19, 1092819), (21, 988741), (39, 532399), (57, 364273), (91, 228171), (133, 156117), (247, 84063), (273, 76057), (399, 52039), (741, 28021), (1729, 12009), (4003, 5187)]