281289905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{3067}}^1$

素因数の和:3185

約数の個数: 32

約数和(自身を含む): 389660544

約数和(自身を除く): 108370639

約数列:

[1, 5, 13, 17, 65, 83, 85, 221, 415, 1079, 1105, 1411, 3067, 5395, 7055, 15335, 18343, 39871, 52139, 91715, 199355, 254561, 260695, 677807, 1272805, 3309293, 3389035, 4327537, 16546465, 21637685, 56257981, 281289905]

約数ペア:

[(1, 281289905), (5, 56257981), (13, 21637685), (17, 16546465), (65, 4327537), (83, 3389035), (85, 3309293), (221, 1272805), (415, 677807), (1079, 260695), (1105, 254561), (1411, 199355), (3067, 91715), (5395, 52139), (7055, 39871), (15335, 18343)]