7921745

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 11104128

約数和(自身を除く): 3182383

約数列:

[1, 5, 13, 17, 65, 67, 85, 107, 221, 335, 535, 871, 1105, 1139, 1391, 1819, 4355, 5695, 6955, 7169, 9095, 14807, 23647, 35845, 74035, 93197, 118235, 121873, 465985, 609365, 1584349, 7921745]

約数ペア:

[(1, 7921745), (5, 1584349), (13, 609365), (17, 465985), (65, 121873), (67, 118235), (85, 93197), (107, 74035), (221, 35845), (335, 23647), (535, 14807), (871, 9095), (1105, 7169), (1139, 6955), (1391, 5695), (1819, 4355)]