20742566

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:444

約数の個数: 32

約数和(自身を含む): 35616000

約数和(自身を除く): 14873434

約数列:

[1, 2, 13, 19, 26, 38, 199, 211, 247, 398, 422, 494, 2587, 2743, 3781, 4009, 5174, 5486, 7562, 8018, 41989, 49153, 52117, 83978, 98306, 104234, 545857, 797791, 1091714, 1595582, 10371283, 20742566]

約数ペア:

[(1, 20742566), (2, 10371283), (13, 1595582), (19, 1091714), (26, 797791), (38, 545857), (199, 104234), (211, 98306), (247, 83978), (398, 52117), (422, 49153), (494, 41989), (2587, 8018), (2743, 7562), (3781, 5486), (4009, 5174)]