20294495

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 27542592

約数和(自身を除く): 7248097

約数列:

[1, 5, 13, 43, 53, 65, 137, 215, 265, 559, 685, 689, 1781, 2279, 2795, 3445, 5891, 7261, 8905, 11395, 29455, 29627, 36305, 76583, 94393, 148135, 312223, 382915, 471965, 1561115, 4058899, 20294495]

約数ペア:

[(1, 20294495), (5, 4058899), (13, 1561115), (43, 471965), (53, 382915), (65, 312223), (137, 148135), (215, 94393), (265, 76583), (559, 36305), (685, 29627), (689, 29455), (1781, 11395), (2279, 8905), (2795, 7261), (3445, 5891)]