20298655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 27417600

約数和(自身を除く): 7118945

約数列:

[1, 5, 13, 59, 65, 67, 79, 295, 335, 395, 767, 871, 1027, 3835, 3953, 4355, 4661, 5135, 5293, 19765, 23305, 26465, 51389, 60593, 68809, 256945, 302965, 312287, 344045, 1561435, 4059731, 20298655]

約数ペア:

[(1, 20298655), (5, 4059731), (13, 1561435), (59, 344045), (65, 312287), (67, 302965), (79, 256945), (295, 68809), (335, 60593), (395, 51389), (767, 26465), (871, 23305), (1027, 19765), (3835, 5293), (3953, 5135), (4355, 4661)]