12720695

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 17418240

約数和(自身を除く): 4697545

約数列:

[1, 5, 13, 31, 59, 65, 107, 155, 295, 403, 535, 767, 1391, 1829, 2015, 3317, 3835, 6313, 6955, 9145, 16585, 23777, 31565, 43121, 82069, 118885, 195703, 215605, 410345, 978515, 2544139, 12720695]

約数ペア:

[(1, 12720695), (5, 2544139), (13, 978515), (31, 410345), (59, 215605), (65, 195703), (107, 118885), (155, 82069), (295, 43121), (403, 31565), (535, 23777), (767, 16585), (1391, 9145), (1829, 6955), (2015, 6313), (3317, 3835)]