19979830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8089}}^1$

素因数の和:8128

約数の個数: 32

約数和(自身を含む): 40773600

約数和(自身を除く): 20793770

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8089, 16178, 40445, 80890, 105157, 153691, 210314, 307382, 525785, 768455, 1051570, 1536910, 1997983, 3995966, 9989915, 19979830]

約数ペア:

[(1, 19979830), (2, 9989915), (5, 3995966), (10, 1997983), (13, 1536910), (19, 1051570), (26, 768455), (38, 525785), (65, 307382), (95, 210314), (130, 153691), (190, 105157), (247, 80890), (494, 40445), (1235, 16178), (2470, 8089)]