15257905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 20756736

約数和(自身を除く): 5498831

約数列:

[1, 5, 13, 43, 53, 65, 103, 215, 265, 515, 559, 689, 1339, 2279, 2795, 3445, 4429, 5459, 6695, 11395, 22145, 27295, 29627, 57577, 70967, 148135, 234737, 287885, 354835, 1173685, 3051581, 15257905]

約数ペア:

[(1, 15257905), (5, 3051581), (13, 1173685), (43, 354835), (53, 287885), (65, 234737), (103, 148135), (215, 70967), (265, 57577), (515, 29627), (559, 27295), (689, 22145), (1339, 11395), (2279, 6695), (2795, 5459), (3445, 4429)]