68640208

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47143}}^1$

素因数の和:47171

約数の個数: 40

約数和(自身を含む): 163683968

約数和(自身を除く): 95043760

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 47143, 94286, 188572, 330001, 377144, 612859, 660002, 754288, 1225718, 1320004, 2451436, 2640008, 4290013, 4902872, 5280016, 8580026, 9805744, 17160052, 34320104, 68640208]

約数ペア:

[(1, 68640208), (2, 34320104), (4, 17160052), (7, 9805744), (8, 8580026), (13, 5280016), (14, 4902872), (16, 4290013), (26, 2640008), (28, 2451436), (52, 1320004), (56, 1225718), (91, 754288), (104, 660002), (112, 612859), (182, 377144), (208, 330001), (364, 188572), (728, 94286), (1456, 47143)]