20131865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 27396096

約数和(自身を除く): 7264231

約数列:

[1, 5, 13, 31, 65, 97, 103, 155, 403, 485, 515, 1261, 1339, 2015, 3007, 3193, 6305, 6695, 9991, 15035, 15965, 39091, 41509, 49955, 129883, 195455, 207545, 309721, 649415, 1548605, 4026373, 20131865]

約数ペア:

[(1, 20131865), (5, 4026373), (13, 1548605), (31, 649415), (65, 309721), (97, 207545), (103, 195455), (155, 129883), (403, 49955), (485, 41509), (515, 39091), (1261, 15965), (1339, 15035), (2015, 9991), (3007, 6695), (3193, 6305)]