19794580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4007}}^1$

素因数の和:4048

約数の個数: 48

約数和(自身を含む): 47134080

約数和(自身を除く): 27339500

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4007, 4940, 8014, 16028, 20035, 40070, 52091, 76133, 80140, 104182, 152266, 208364, 260455, 304532, 380665, 520910, 761330, 989729, 1041820, 1522660, 1979458, 3958916, 4948645, 9897290, 19794580]

約数ペア:

[(1, 19794580), (2, 9897290), (4, 4948645), (5, 3958916), (10, 1979458), (13, 1522660), (19, 1041820), (20, 989729), (26, 761330), (38, 520910), (52, 380665), (65, 304532), (76, 260455), (95, 208364), (130, 152266), (190, 104182), (247, 80140), (260, 76133), (380, 52091), (494, 40070), (988, 20035), (1235, 16028), (2470, 8014), (4007, 4940)]