19490770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{607}}^1$

素因数の和:659

約数の個数: 48

約数和(自身を含む): 40055040

約数和(自身を除く): 20564270

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 169, 190, 247, 338, 494, 607, 845, 1214, 1235, 1690, 2470, 3035, 3211, 6070, 6422, 7891, 11533, 15782, 16055, 23066, 32110, 39455, 57665, 78910, 102583, 115330, 149929, 205166, 299858, 512915, 749645, 1025830, 1499290, 1949077, 3898154, 9745385, 19490770]

約数ペア:

[(1, 19490770), (2, 9745385), (5, 3898154), (10, 1949077), (13, 1499290), (19, 1025830), (26, 749645), (38, 512915), (65, 299858), (95, 205166), (130, 149929), (169, 115330), (190, 102583), (247, 78910), (338, 57665), (494, 39455), (607, 32110), (845, 23066), (1214, 16055), (1235, 15782), (1690, 11533), (2470, 7891), (3035, 6422), (3211, 6070)]