20909035

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2753}}^1$

素因数の和:2803

約数の個数: 24

約数和(自身を含む): 30139776

約数和(自身を除く): 9230741

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 2753, 7595, 13765, 19271, 85343, 96355, 134897, 426715, 597401, 674485, 2987005, 4181807, 20909035]

約数ペア:

[(1, 20909035), (5, 4181807), (7, 2987005), (31, 674485), (35, 597401), (49, 426715), (155, 134897), (217, 96355), (245, 85343), (1085, 19271), (1519, 13765), (2753, 7595)]