20809516

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8167}}^1$

素因数の和:8198

約数の個数: 36

約数和(自身を含む): 45626448

約数和(自身を除く): 24816932

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8167, 16334, 32668, 57169, 106171, 114338, 212342, 228676, 400183, 424684, 743197, 800366, 1486394, 1600732, 2972788, 5202379, 10404758, 20809516]

約数ペア:

[(1, 20809516), (2, 10404758), (4, 5202379), (7, 2972788), (13, 1600732), (14, 1486394), (26, 800366), (28, 743197), (49, 424684), (52, 400183), (91, 228676), (98, 212342), (182, 114338), (196, 106171), (364, 57169), (637, 32668), (1274, 16334), (2548, 8167)]