19779890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2143}}^1$

素因数の和:2234

約数の個数: 32

約数和(自身を含む): 38900736

約数和(自身を除く): 19120846

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 355, 710, 923, 1846, 2143, 4286, 4615, 9230, 10715, 21430, 27859, 55718, 139295, 152153, 278590, 304306, 760765, 1521530, 1977989, 3955978, 9889945, 19779890]

約数ペア:

[(1, 19779890), (2, 9889945), (5, 3955978), (10, 1977989), (13, 1521530), (26, 760765), (65, 304306), (71, 278590), (130, 152153), (142, 139295), (355, 55718), (710, 27859), (923, 21430), (1846, 10715), (2143, 9230), (4286, 4615)]