261714245

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 358106112

約数和(自身を除く): 96391867

約数列:

[1, 5, 13, 31, 65, 97, 103, 155, 169, 403, 485, 515, 845, 1261, 1339, 2015, 3007, 3193, 5239, 6305, 6695, 9991, 15035, 15965, 16393, 17407, 26195, 39091, 41509, 49955, 81965, 87035, 129883, 195455, 207545, 309721, 508183, 539617, 649415, 1548605, 1688479, 2540915, 2698085, 4026373, 8442395, 20131865, 52342849, 261714245]

約数ペア:

[(1, 261714245), (5, 52342849), (13, 20131865), (31, 8442395), (65, 4026373), (97, 2698085), (103, 2540915), (155, 1688479), (169, 1548605), (403, 649415), (485, 539617), (515, 508183), (845, 309721), (1261, 207545), (1339, 195455), (2015, 129883), (3007, 87035), (3193, 81965), (5239, 49955), (6305, 41509), (6695, 39091), (9991, 26195), (15035, 17407), (15965, 16393)]